2 LINUX ALLOCATED DEVICES (2.6+ version)
4 Maintained by Torben Mathiasen <device@lanana.org>
6 Last revised: 25 January 2005
8 This list is the Linux Device List, the official registry of allocated
9 device numbers and /dev directory nodes for the Linux operating
12 The latest version of this list is available from
13 http://www.lanana.org/docs/device-list/ or
14 ftp://ftp.kernel.org/pub/linux/docs/device-list/. This version may be
15 newer than the one distributed with the Linux kernel.
17 The LaTeX version of this document is no longer maintained.
19 This document is included by reference into the Filesystem Hierarchy
20 Standard (FHS). The FHS is available from http://www.pathname.com/fhs/.
22 Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
23 platform only. Allocations marked (68k/Atari) apply to Linux/68k on
24 the Atari platform only.
26 The symbol {2.6} means the allocation is obsolete and scheduled for
27 removal once kernel version 2.6 (or equivalent) is released. Some of these
28 allocations have already been removed.
30 This document is in the public domain. The author requests, however,
31 that semantically altered versions are not distributed without
32 permission of the author, assuming the author can be contacted without
33 an unreasonable effort.
35 In particular, please don't sent patches for this list to Linus, at
36 least not without contacting me first.
38 I do not have any information about these devices beyond what appears
39 on this list. Any such information requests will be deleted without
43 **** DEVICE DRIVERS AUTHORS PLEASE READ THIS ****
45 To have a major number allocated, or a minor number in situations
46 where that applies (e.g. busmice), please contact me with the
47 appropriate device information. Also, if you have additional
48 information regarding any of the devices listed below, or if I have
49 made a mistake, I would greatly appreciate a note.
51 I do, however, make a few requests about the nature of your report.
52 This is necessary for me to be able to keep this list up to date and
53 correct in a timely manner. First of all, *please* send it to the
54 correct address... <device@lanana.org>. I receive hundreds of email
55 messages a day, so mail sent to other addresses may very well get lost
56 in the avalanche. Please put in a descriptive subject, so I can find
57 your mail again should I need to. Too many people send me email
58 saying just "device number request" in the subject.
60 Second, please include a description of the device *in the same format
61 as this list*. The reason for this is that it is the only way I have
62 found to ensure I have all the requisite information to publish your
63 device and avoid conflicts.
65 Third, please don't assume that the distributed version of the list is
66 up to date. Due to the number of registrations I have to maintain it
67 in "batch mode", so there is likely additional registrations that
68 haven't been listed yet.
70 Finally, sometimes I have to play "namespace police." Please don't be
71 offended. I often get submissions for /dev names that would be bound
72 to cause conflicts down the road. I am trying to avoid getting in a
73 situation where we would have to suffer an incompatible forward
74 change. Therefore, please consult with me *before* you make your
75 device names and numbers in any way public, at least to the point
76 where it would be at all difficult to get them changed.
78 Your cooperation is appreciated.
81 0 Unnamed devices (e.g. non-device mounts)
82 0 = reserved as null device number
83 See block major 144, 145, 146 for expansion areas.
86 1 = /dev/mem Physical memory access
87 2 = /dev/kmem Kernel virtual memory access
88 3 = /dev/null Null device
89 4 = /dev/port I/O port access
90 5 = /dev/zero Null byte source
91 6 = /dev/core OBSOLETE - replaced by /proc/kcore
92 7 = /dev/full Returns ENOSPC on write
93 8 = /dev/random Nondeterministic random number gen.
94 9 = /dev/urandom Faster, less secure random number gen.
95 10 = /dev/aio Asyncronous I/O notification interface
96 11 = /dev/kmsg Writes to this come out as printk's
97 12 = /dev/oldmem Access to crash dump from kexec kernel
99 0 = /dev/ram0 First RAM disk
100 1 = /dev/ram1 Second RAM disk
102 250 = /dev/initrd Initial RAM disk {2.6}
104 Older kernels had /dev/ramdisk (1, 1) here.
105 /dev/initrd refers to a RAM disk which was preloaded
106 by the boot loader; newer kernels use /dev/ram0 for
109 2 char Pseudo-TTY masters
110 0 = /dev/ptyp0 First PTY master
111 1 = /dev/ptyp1 Second PTY master
113 255 = /dev/ptyef 256th PTY master
115 Pseudo-tty's are named as follows:
116 * Masters are "pty", slaves are "tty";
117 * the fourth letter is one of pqrstuvwxyzabcde indicating
118 the 1st through 16th series of 16 pseudo-ttys each, and
119 * the fifth letter is one of 0123456789abcdef indicating
120 the position within the series.
122 These are the old-style (BSD) PTY devices; Unix98
123 devices are on major 128 and above and use the PTY
124 master multiplex (/dev/ptmx) to acquire a PTY on
128 0 = /dev/fd0 Controller 0, drive 0, autodetect
129 1 = /dev/fd1 Controller 0, drive 1, autodetect
130 2 = /dev/fd2 Controller 0, drive 2, autodetect
131 3 = /dev/fd3 Controller 0, drive 3, autodetect
132 128 = /dev/fd4 Controller 1, drive 0, autodetect
133 129 = /dev/fd5 Controller 1, drive 1, autodetect
134 130 = /dev/fd6 Controller 1, drive 2, autodetect
135 131 = /dev/fd7 Controller 1, drive 3, autodetect
137 To specify format, add to the autodetect device number:
138 0 = /dev/fd? Autodetect format
139 4 = /dev/fd?d360 5.25" 360K in a 360K drive(1)
140 20 = /dev/fd?h360 5.25" 360K in a 1200K drive(1)
141 48 = /dev/fd?h410 5.25" 410K in a 1200K drive
142 64 = /dev/fd?h420 5.25" 420K in a 1200K drive
143 24 = /dev/fd?h720 5.25" 720K in a 1200K drive
144 80 = /dev/fd?h880 5.25" 880K in a 1200K drive(1)
145 8 = /dev/fd?h1200 5.25" 1200K in a 1200K drive(1)
146 40 = /dev/fd?h1440 5.25" 1440K in a 1200K drive(1)
147 56 = /dev/fd?h1476 5.25" 1476K in a 1200K drive
148 72 = /dev/fd?h1494 5.25" 1494K in a 1200K drive
149 92 = /dev/fd?h1600 5.25" 1600K in a 1200K drive(1)
151 12 = /dev/fd?u360 3.5" 360K Double Density(2)
152 16 = /dev/fd?u720 3.5" 720K Double Density(1)
153 120 = /dev/fd?u800 3.5" 800K Double Density(2)
154 52 = /dev/fd?u820 3.5" 820K Double Density
155 68 = /dev/fd?u830 3.5" 830K Double Density
156 84 = /dev/fd?u1040 3.5" 1040K Double Density(1)
157 88 = /dev/fd?u1120 3.5" 1120K Double Density(1)
158 28 = /dev/fd?u1440 3.5" 1440K High Density(1)
159 124 = /dev/fd?u1600 3.5" 1600K High Density(1)
160 44 = /dev/fd?u1680 3.5" 1680K High Density(3)
161 60 = /dev/fd?u1722 3.5" 1722K High Density
162 76 = /dev/fd?u1743 3.5" 1743K High Density
163 96 = /dev/fd?u1760 3.5" 1760K High Density
164 116 = /dev/fd?u1840 3.5" 1840K High Density(3)
165 100 = /dev/fd?u1920 3.5" 1920K High Density(1)
166 32 = /dev/fd?u2880 3.5" 2880K Extra Density(1)
167 104 = /dev/fd?u3200 3.5" 3200K Extra Density
168 108 = /dev/fd?u3520 3.5" 3520K Extra Density
169 112 = /dev/fd?u3840 3.5" 3840K Extra Density(1)
171 36 = /dev/fd?CompaQ Compaq 2880K drive; obsolete?
173 (1) Autodetectable format
174 (2) Autodetectable format in a Double Density (720K) drive only
175 (3) Autodetectable format in a High Density (1440K) drive only
177 NOTE: The letter in the device name (d, q, h or u)
178 signifies the type of drive: 5.25" Double Density (d),
179 5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
180 (any model, u). The use of the capital letters D, H
181 and E for the 3.5" models have been deprecated, since
182 the drive type is insignificant for these devices.
184 3 char Pseudo-TTY slaves
185 0 = /dev/ttyp0 First PTY slave
186 1 = /dev/ttyp1 Second PTY slave
188 255 = /dev/ttyef 256th PTY slave
190 These are the old-style (BSD) PTY devices; Unix98
191 devices are on major 136 and above.
193 3 block First MFM, RLL and IDE hard disk/CD-ROM interface
194 0 = /dev/hda Master: whole disk (or CD-ROM)
195 64 = /dev/hdb Slave: whole disk (or CD-ROM)
197 For partitions, add to the whole disk device number:
198 0 = /dev/hd? Whole disk
199 1 = /dev/hd?1 First partition
200 2 = /dev/hd?2 Second partition
202 63 = /dev/hd?63 63rd partition
204 For Linux/i386, partitions 1-4 are the primary
205 partitions, and 5 and above are logical partitions.
206 Other versions of Linux use partitioning schemes
207 appropriate to their respective architectures.
210 0 = /dev/tty0 Current virtual console
212 1 = /dev/tty1 First virtual console
214 63 = /dev/tty63 63rd virtual console
215 64 = /dev/ttyS0 First UART serial port
217 255 = /dev/ttyS191 192nd UART serial port
219 UART serial ports refer to 8250/16450/16550 series devices.
221 Older versions of the Linux kernel used this major
222 number for BSD PTY devices. As of Linux 2.1.115, this
223 is no longer supported. Use major numbers 2 and 3.
225 4 block Aliases for dynamically allocated major devices to be used
226 when its not possible to create the real device nodes
227 because the root filesystem is mounted read-only.
231 5 char Alternate TTY devices
232 0 = /dev/tty Current TTY device
233 1 = /dev/console System console
234 2 = /dev/ptmx PTY master multiplex
235 64 = /dev/cua0 Callout device for ttyS0
237 255 = /dev/cua191 Callout device for ttyS191
239 (5,1) is /dev/console starting with Linux 2.1.71. See
240 the section on terminal devices for more information
243 6 char Parallel printer devices
244 0 = /dev/lp0 Parallel printer on parport0
245 1 = /dev/lp1 Parallel printer on parport1
248 Current Linux kernels no longer have a fixed mapping
249 between parallel ports and I/O addresses. Instead,
250 they are redirected through the parport multiplex layer.
252 7 char Virtual console capture devices
253 0 = /dev/vcs Current vc text contents
254 1 = /dev/vcs1 tty1 text contents
256 63 = /dev/vcs63 tty63 text contents
257 128 = /dev/vcsa Current vc text/attribute contents
258 129 = /dev/vcsa1 tty1 text/attribute contents
260 191 = /dev/vcsa63 tty63 text/attribute contents
262 NOTE: These devices permit both read and write access.
264 7 block Loopback devices
265 0 = /dev/loop0 First loopback device
266 1 = /dev/loop1 Second loopback device
269 The loopback devices are used to mount filesystems not
270 associated with block devices. The binding to the
271 loopback devices is handled by mount(8) or losetup(8).
273 8 block SCSI disk devices (0-15)
274 0 = /dev/sda First SCSI disk whole disk
275 16 = /dev/sdb Second SCSI disk whole disk
276 32 = /dev/sdc Third SCSI disk whole disk
278 240 = /dev/sdp Sixteenth SCSI disk whole disk
280 Partitions are handled in the same way as for IDE
281 disks (see major number 3) except that the limit on
284 9 char SCSI tape devices
285 0 = /dev/st0 First SCSI tape, mode 0
286 1 = /dev/st1 Second SCSI tape, mode 0
288 32 = /dev/st0l First SCSI tape, mode 1
289 33 = /dev/st1l Second SCSI tape, mode 1
291 64 = /dev/st0m First SCSI tape, mode 2
292 65 = /dev/st1m Second SCSI tape, mode 2
294 96 = /dev/st0a First SCSI tape, mode 3
295 97 = /dev/st1a Second SCSI tape, mode 3
297 128 = /dev/nst0 First SCSI tape, mode 0, no rewind
298 129 = /dev/nst1 Second SCSI tape, mode 0, no rewind
300 160 = /dev/nst0l First SCSI tape, mode 1, no rewind
301 161 = /dev/nst1l Second SCSI tape, mode 1, no rewind
303 192 = /dev/nst0m First SCSI tape, mode 2, no rewind
304 193 = /dev/nst1m Second SCSI tape, mode 2, no rewind
306 224 = /dev/nst0a First SCSI tape, mode 3, no rewind
307 225 = /dev/nst1a Second SCSI tape, mode 3, no rewind
310 "No rewind" refers to the omission of the default
311 automatic rewind on device close. The MTREW or MTOFFL
312 ioctl()'s can be used to rewind the tape regardless of
313 the device used to access it.
315 9 block Metadisk (RAID) devices
316 0 = /dev/md0 First metadisk group
317 1 = /dev/md1 Second metadisk group
320 The metadisk driver is used to span a
321 filesystem across multiple physical disks.
323 10 char Non-serial mice, misc features
324 0 = /dev/logibm Logitech bus mouse
325 1 = /dev/psaux PS/2-style mouse port
326 2 = /dev/inportbm Microsoft Inport bus mouse
327 3 = /dev/atibm ATI XL bus mouse
329 4 = /dev/amigamouse Amiga mouse (68k/Amiga)
330 5 = /dev/atarimouse Atari mouse
331 6 = /dev/sunmouse Sun mouse
332 7 = /dev/amigamouse1 Second Amiga mouse
333 8 = /dev/smouse Simple serial mouse driver
334 9 = /dev/pc110pad IBM PC-110 digitizer pad
335 10 = /dev/adbmouse Apple Desktop Bus mouse
336 11 = /dev/vrtpanel Vr41xx embedded touch panel
337 13 = /dev/vpcmouse Connectix Virtual PC Mouse
338 14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen
339 15 = /dev/touchscreen/mk712 MK712 touchscreen
340 128 = /dev/beep Fancy beep device
341 129 = /dev/modreq Kernel module load request {2.6}
342 130 = /dev/watchdog Watchdog timer port
343 131 = /dev/temperature Machine internal temperature
344 132 = /dev/hwtrap Hardware fault trap
345 133 = /dev/exttrp External device trap
346 134 = /dev/apm_bios Advanced Power Management BIOS
347 135 = /dev/rtc Real Time Clock
348 139 = /dev/openprom SPARC OpenBoot PROM
349 140 = /dev/relay8 Berkshire Products Octal relay card
350 141 = /dev/relay16 Berkshire Products ISO-16 relay card
351 142 = /dev/msr x86 model-specific registers {2.6}
352 143 = /dev/pciconf PCI configuration space
353 144 = /dev/nvram Non-volatile configuration RAM
354 145 = /dev/hfmodem Soundcard shortwave modem control {2.6}
355 146 = /dev/graphics Linux/SGI graphics device
356 147 = /dev/opengl Linux/SGI OpenGL pipe
357 148 = /dev/gfx Linux/SGI graphics effects device
358 149 = /dev/input/mouse Linux/SGI Irix emulation mouse
359 150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
360 151 = /dev/led Front panel LEDs
361 152 = /dev/kpoll Kernel Poll Driver
362 153 = /dev/mergemem Memory merge device
363 154 = /dev/pmu Macintosh PowerBook power manager
364 155 = /dev/isictl MultiTech ISICom serial control
365 156 = /dev/lcd Front panel LCD display
366 157 = /dev/ac Applicom Intl Profibus card
367 158 = /dev/nwbutton Netwinder external button
368 159 = /dev/nwdebug Netwinder debug interface
369 160 = /dev/nwflash Netwinder flash memory
370 161 = /dev/userdma User-space DMA access
371 162 = /dev/smbus System Management Bus
372 163 = /dev/lik Logitech Internet Keyboard
373 164 = /dev/ipmo Intel Intelligent Platform Management
374 165 = /dev/vmmon VMWare virtual machine monitor
375 166 = /dev/i2o/ctl I2O configuration manager
376 167 = /dev/specialix_sxctl Specialix serial control
377 168 = /dev/tcldrv Technology Concepts serial control
378 169 = /dev/specialix_rioctl Specialix RIO serial control
379 170 = /dev/thinkpad/thinkpad IBM Thinkpad devices
380 171 = /dev/srripc QNX4 API IPC manager
381 172 = /dev/usemaclone Semaphore clone device
382 173 = /dev/ipmikcs Intelligent Platform Management
383 174 = /dev/uctrl SPARCbook 3 microcontroller
384 175 = /dev/agpgart AGP Graphics Address Remapping Table
385 176 = /dev/gtrsc Gorgy Timing radio clock
386 177 = /dev/cbm Serial CBM bus
387 178 = /dev/jsflash JavaStation OS flash SIMM
388 179 = /dev/xsvc High-speed shared-mem/semaphore service
389 180 = /dev/vrbuttons Vr41xx button input device
390 181 = /dev/toshiba Toshiba laptop SMM support
391 182 = /dev/perfctr Performance-monitoring counters
392 183 = /dev/hwrng Generic random number generator
393 184 = /dev/cpu/microcode CPU microcode update interface
394 186 = /dev/atomicps Atomic shapshot of process state data
395 187 = /dev/irnet IrNET device
396 188 = /dev/smbusbios SMBus BIOS
397 189 = /dev/ussp_ctl User space serial port control
398 190 = /dev/crash Mission Critical Linux crash dump facility
399 191 = /dev/pcl181 <information missing>
400 192 = /dev/nas_xbus NAS xbus LCD/buttons access
401 193 = /dev/d7s SPARC 7-segment display
402 194 = /dev/zkshim Zero-Knowledge network shim control
403 195 = /dev/elographics/e2201 Elographics touchscreen E271-2201
404 198 = /dev/sexec Signed executable interface
405 199 = /dev/scanners/cuecat :CueCat barcode scanner
406 200 = /dev/net/tun TAP/TUN network device
407 201 = /dev/button/gulpb Transmeta GULP-B buttons
408 202 = /dev/emd/ctl Enhanced Metadisk RAID (EMD) control
409 204 = /dev/video/em8300 EM8300 DVD decoder control
410 205 = /dev/video/em8300_mv EM8300 DVD decoder video
411 206 = /dev/video/em8300_ma EM8300 DVD decoder audio
412 207 = /dev/video/em8300_sp EM8300 DVD decoder subpicture
413 208 = /dev/compaq/cpqphpc Compaq PCI Hot Plug Controller
414 209 = /dev/compaq/cpqrid Compaq Remote Insight Driver
415 210 = /dev/impi/bt IMPI coprocessor block transfer
416 211 = /dev/impi/smic IMPI coprocessor stream interface
417 212 = /dev/watchdogs/0 First watchdog device
418 213 = /dev/watchdogs/1 Second watchdog device
419 214 = /dev/watchdogs/2 Third watchdog device
420 215 = /dev/watchdogs/3 Fourth watchdog device
421 216 = /dev/fujitsu/apanel Fujitsu/Siemens application panel
422 217 = /dev/ni/natmotn National Instruments Motion
423 218 = /dev/kchuid Inter-process chuid control
424 219 = /dev/modems/mwave MWave modem firmware upload
425 220 = /dev/mptctl Message passing technology (MPT) control
426 221 = /dev/mvista/hssdsi Montavista PICMG hot swap system driver
427 222 = /dev/mvista/hasi Montavista PICMG high availability
428 223 = /dev/input/uinput User level driver support for input
429 224 = /dev/tpm TCPA TPM driver
430 225 = /dev/pps Pulse Per Second driver
431 226 = /dev/systrace Systrace device
432 227 = /dev/mcelog X86_64 Machine Check Exception driver
433 228 = /dev/hpet HPET driver
434 229 = /dev/fuse Fuse (virtual filesystem in user-space)
435 230 = /dev/midishare MidiShare driver
436 240-254 Reserved for local use
437 255 Reserved for MISC_DYNAMIC_MINOR
439 11 char Raw keyboard device (Linux/SPARC only)
440 0 = /dev/kbd Raw keyboard device
442 11 char Serial Mux device (Linux/PA-RISC only)
443 0 = /dev/ttyB0 First mux port
444 1 = /dev/ttyB1 Second mux port
447 11 block SCSI CD-ROM devices
448 0 = /dev/scd0 First SCSI CD-ROM
449 1 = /dev/scd1 Second SCSI CD-ROM
452 The prefix /dev/sr (instead of /dev/scd) has been deprecated.
455 2 = /dev/ntpqic11 QIC-11, no rewind-on-close
456 3 = /dev/tpqic11 QIC-11, rewind-on-close
457 4 = /dev/ntpqic24 QIC-24, no rewind-on-close
458 5 = /dev/tpqic24 QIC-24, rewind-on-close
459 6 = /dev/ntpqic120 QIC-120, no rewind-on-close
460 7 = /dev/tpqic120 QIC-120, rewind-on-close
461 8 = /dev/ntpqic150 QIC-150, no rewind-on-close
462 9 = /dev/tpqic150 QIC-150, rewind-on-close
464 The device names specified are proposed -- if there
465 are "standard" names for these devices, please let me know.
467 12 block MSCDEX CD-ROM callback support {2.6}
468 0 = /dev/dos_cd0 First MSCDEX CD-ROM
469 1 = /dev/dos_cd1 Second MSCDEX CD-ROM
473 0 = /dev/input/js0 First joystick
474 1 = /dev/input/js1 Second joystick
476 32 = /dev/input/mouse0 First mouse
477 33 = /dev/input/mouse1 Second mouse
479 63 = /dev/input/mice Unified mouse
480 64 = /dev/input/event0 First event queue
481 65 = /dev/input/event1 Second event queue
484 Each device type has 5 bits (32 minors).
486 13 block 8-bit MFM/RLL/IDE controller
487 0 = /dev/xda First XT disk whole disk
488 64 = /dev/xdb Second XT disk whole disk
490 Partitions are handled in the same way as IDE disks
491 (see major number 3).
493 14 char Open Sound System (OSS)
494 0 = /dev/mixer Mixer control
495 1 = /dev/sequencer Audio sequencer
496 2 = /dev/midi00 First MIDI port
497 3 = /dev/dsp Digital audio
498 4 = /dev/audio Sun-compatible digital audio
499 6 = /dev/sndstat Sound card status information {2.6}
500 7 = /dev/audioctl SPARC audio control device
501 8 = /dev/sequencer2 Sequencer -- alternate device
502 16 = /dev/mixer1 Second soundcard mixer control
503 17 = /dev/patmgr0 Sequencer patch manager
504 18 = /dev/midi01 Second MIDI port
505 19 = /dev/dsp1 Second soundcard digital audio
506 20 = /dev/audio1 Second soundcard Sun digital audio
507 33 = /dev/patmgr1 Sequencer patch manager
508 34 = /dev/midi02 Third MIDI port
509 50 = /dev/midi03 Fourth MIDI port
510 14 block BIOS harddrive callback support {2.6}
511 0 = /dev/dos_hda First BIOS harddrive whole disk
512 64 = /dev/dos_hdb Second BIOS harddrive whole disk
513 128 = /dev/dos_hdc Third BIOS harddrive whole disk
514 192 = /dev/dos_hdd Fourth BIOS harddrive whole disk
516 Partitions are handled in the same way as IDE disks
517 (see major number 3).
520 0 = /dev/js0 First analog joystick
521 1 = /dev/js1 Second analog joystick
523 128 = /dev/djs0 First digital joystick
524 129 = /dev/djs1 Second digital joystick
526 15 block Sony CDU-31A/CDU-33A CD-ROM
527 0 = /dev/sonycd Sony CDU-31a CD-ROM
529 16 char Non-SCSI scanners
530 0 = /dev/gs4500 Genius 4500 handheld scanner
531 16 block GoldStar CD-ROM
532 0 = /dev/gscd GoldStar CD-ROM
534 17 char Chase serial card
535 0 = /dev/ttyH0 First Chase port
536 1 = /dev/ttyH1 Second Chase port
538 17 block Optics Storage CD-ROM
539 0 = /dev/optcd Optics Storage CD-ROM
541 18 char Chase serial card - alternate devices
542 0 = /dev/cuh0 Callout device for ttyH0
543 1 = /dev/cuh1 Callout device for ttyH1
545 18 block Sanyo CD-ROM
546 0 = /dev/sjcd Sanyo CD-ROM
548 19 char Cyclades serial card
549 0 = /dev/ttyC0 First Cyclades port
551 31 = /dev/ttyC31 32nd Cyclades port
552 19 block "Double" compressed disk
553 0 = /dev/double0 First compressed disk
555 7 = /dev/double7 Eighth compressed disk
556 128 = /dev/cdouble0 Mirror of first compressed disk
558 135 = /dev/cdouble7 Mirror of eighth compressed disk
560 See the Double documentation for the meaning of the
563 20 char Cyclades serial card - alternate devices
564 0 = /dev/cub0 Callout device for ttyC0
566 31 = /dev/cub31 Callout device for ttyC31
567 20 block Hitachi CD-ROM (under development)
568 0 = /dev/hitcd Hitachi CD-ROM
570 21 char Generic SCSI access
571 0 = /dev/sg0 First generic SCSI device
572 1 = /dev/sg1 Second generic SCSI device
575 Most distributions name these /dev/sga, /dev/sgb...;
576 this sets an unnecessary limit of 26 SCSI devices in
577 the system and is counter to standard Linux
578 device-naming practice.
580 21 block Acorn MFM hard drive interface
581 0 = /dev/mfma First MFM drive whole disk
582 64 = /dev/mfmb Second MFM drive whole disk
584 This device is used on the ARM-based Acorn RiscPC.
585 Partitions are handled the same way as for IDE disks
586 (see major number 3).
588 22 char Digiboard serial card
589 0 = /dev/ttyD0 First Digiboard port
590 1 = /dev/ttyD1 Second Digiboard port
592 22 block Second IDE hard disk/CD-ROM interface
593 0 = /dev/hdc Master: whole disk (or CD-ROM)
594 64 = /dev/hdd Slave: whole disk (or CD-ROM)
596 Partitions are handled the same way as for the first
597 interface (see major number 3).
599 23 char Digiboard serial card - alternate devices
600 0 = /dev/cud0 Callout device for ttyD0
601 1 = /dev/cud1 Callout device for ttyD1
603 23 block Mitsumi proprietary CD-ROM
604 0 = /dev/mcd Mitsumi CD-ROM
606 24 char Stallion serial card
607 0 = /dev/ttyE0 Stallion port 0 card 0
608 1 = /dev/ttyE1 Stallion port 1 card 0
610 64 = /dev/ttyE64 Stallion port 0 card 1
611 65 = /dev/ttyE65 Stallion port 1 card 1
613 128 = /dev/ttyE128 Stallion port 0 card 2
614 129 = /dev/ttyE129 Stallion port 1 card 2
616 192 = /dev/ttyE192 Stallion port 0 card 3
617 193 = /dev/ttyE193 Stallion port 1 card 3
619 24 block Sony CDU-535 CD-ROM
620 0 = /dev/cdu535 Sony CDU-535 CD-ROM
622 25 char Stallion serial card - alternate devices
623 0 = /dev/cue0 Callout device for ttyE0
624 1 = /dev/cue1 Callout device for ttyE1
626 64 = /dev/cue64 Callout device for ttyE64
627 65 = /dev/cue65 Callout device for ttyE65
629 128 = /dev/cue128 Callout device for ttyE128
630 129 = /dev/cue129 Callout device for ttyE129
632 192 = /dev/cue192 Callout device for ttyE192
633 193 = /dev/cue193 Callout device for ttyE193
635 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
636 0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
637 1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
638 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
639 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
641 26 char Quanta WinVision frame grabber {2.6}
642 0 = /dev/wvisfgrab Quanta WinVision frame grabber
643 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
644 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
645 1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
646 2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
647 3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
650 0 = /dev/qft0 Unit 0, rewind-on-close
651 1 = /dev/qft1 Unit 1, rewind-on-close
652 2 = /dev/qft2 Unit 2, rewind-on-close
653 3 = /dev/qft3 Unit 3, rewind-on-close
654 4 = /dev/nqft0 Unit 0, no rewind-on-close
655 5 = /dev/nqft1 Unit 1, no rewind-on-close
656 6 = /dev/nqft2 Unit 2, no rewind-on-close
657 7 = /dev/nqft3 Unit 3, no rewind-on-close
658 16 = /dev/zqft0 Unit 0, rewind-on-close, compression
659 17 = /dev/zqft1 Unit 1, rewind-on-close, compression
660 18 = /dev/zqft2 Unit 2, rewind-on-close, compression
661 19 = /dev/zqft3 Unit 3, rewind-on-close, compression
662 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
663 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
664 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
665 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
666 32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
667 33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
668 34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
669 35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
670 36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
671 37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
672 38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
673 39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
674 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
675 0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
676 1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
677 2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
678 3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
680 28 char Stallion serial card - card programming
681 0 = /dev/staliomem0 First Stallion card I/O memory
682 1 = /dev/staliomem1 Second Stallion card I/O memory
683 2 = /dev/staliomem2 Third Stallion card I/O memory
684 3 = /dev/staliomem3 Fourth Stallion card I/O memory
685 28 char Atari SLM ACSI laser printer (68k/Atari)
686 0 = /dev/slm0 First SLM laser printer
687 1 = /dev/slm1 Second SLM laser printer
689 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
690 0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
691 1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
692 2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
693 3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
694 28 block ACSI disk (68k/Atari)
695 0 = /dev/ada First ACSI disk whole disk
696 16 = /dev/adb Second ACSI disk whole disk
697 32 = /dev/adc Third ACSI disk whole disk
699 240 = /dev/adp 16th ACSI disk whole disk
701 Partitions are handled in the same way as for IDE
702 disks (see major number 3) except that the limit on
703 partitions is 15, like SCSI.
705 29 char Universal frame buffer
706 0 = /dev/fb0 First frame buffer
707 1 = /dev/fb1 Second frame buffer
709 31 = /dev/fb31 32nd frame buffer
711 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
712 0 = /dev/aztcd Aztech CD-ROM
714 30 char iBCS-2 compatibility devices
715 0 = /dev/socksys Socket access
716 1 = /dev/spx SVR3 local X interface
717 32 = /dev/inet/ip Network access
728 Additionally, iBCS-2 requires the following links:
730 /dev/ip -> /dev/inet/ip
731 /dev/icmp -> /dev/inet/icmp
732 /dev/ggp -> /dev/inet/ggp
733 /dev/ipip -> /dev/inet/ipip
734 /dev/tcp -> /dev/inet/tcp
735 /dev/egp -> /dev/inet/egp
736 /dev/pup -> /dev/inet/pup
737 /dev/udp -> /dev/inet/udp
738 /dev/idp -> /dev/inet/idp
739 /dev/rawip -> /dev/inet/rawip
740 /dev/inet/arp -> /dev/inet/udp
741 /dev/inet/rip -> /dev/inet/udp
742 /dev/nfsd -> /dev/socksys
743 /dev/X0R -> /dev/null (? apparently not required ?)
745 30 block Philips LMS CM-205 CD-ROM
746 0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
748 /dev/lmscd is an older name for this device. This
749 driver does not work with the CM-205MS CD-ROM.
752 0 = /dev/mpu401data MPU-401 data port
753 1 = /dev/mpu401stat MPU-401 status port
754 31 block ROM/flash memory card
755 0 = /dev/rom0 First ROM card (rw)
757 7 = /dev/rom7 Eighth ROM card (rw)
758 8 = /dev/rrom0 First ROM card (ro)
760 15 = /dev/rrom7 Eighth ROM card (ro)
761 16 = /dev/flash0 First flash memory card (rw)
763 23 = /dev/flash7 Eighth flash memory card (rw)
764 24 = /dev/rflash0 First flash memory card (ro)
766 31 = /dev/rflash7 Eighth flash memory card (ro)
768 The read-write (rw) devices support back-caching
769 written data in RAM, as well as writing to flash RAM
770 devices. The read-only devices (ro) support reading
773 32 char Specialix serial card
774 0 = /dev/ttyX0 First Specialix port
775 1 = /dev/ttyX1 Second Specialix port
777 32 block Philips LMS CM-206 CD-ROM
778 0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
780 33 char Specialix serial card - alternate devices
781 0 = /dev/cux0 Callout device for ttyX0
782 1 = /dev/cux1 Callout device for ttyX1
784 33 block Third IDE hard disk/CD-ROM interface
785 0 = /dev/hde Master: whole disk (or CD-ROM)
786 64 = /dev/hdf Slave: whole disk (or CD-ROM)
788 Partitions are handled the same way as for the first
789 interface (see major number 3).
791 34 char Z8530 HDLC driver
792 0 = /dev/scc0 First Z8530, first port
793 1 = /dev/scc1 First Z8530, second port
794 2 = /dev/scc2 Second Z8530, first port
795 3 = /dev/scc3 Second Z8530, second port
798 In a previous version these devices were named
799 /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
802 34 block Fourth IDE hard disk/CD-ROM interface
803 0 = /dev/hdg Master: whole disk (or CD-ROM)
804 64 = /dev/hdh Slave: whole disk (or CD-ROM)
806 Partitions are handled the same way as for the first
807 interface (see major number 3).
809 35 char tclmidi MIDI driver
810 0 = /dev/midi0 First MIDI port, kernel timed
811 1 = /dev/midi1 Second MIDI port, kernel timed
812 2 = /dev/midi2 Third MIDI port, kernel timed
813 3 = /dev/midi3 Fourth MIDI port, kernel timed
814 64 = /dev/rmidi0 First MIDI port, untimed
815 65 = /dev/rmidi1 Second MIDI port, untimed
816 66 = /dev/rmidi2 Third MIDI port, untimed
817 67 = /dev/rmidi3 Fourth MIDI port, untimed
818 128 = /dev/smpte0 First MIDI port, SMPTE timed
819 129 = /dev/smpte1 Second MIDI port, SMPTE timed
820 130 = /dev/smpte2 Third MIDI port, SMPTE timed
821 131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
822 35 block Slow memory ramdisk
823 0 = /dev/slram Slow memory ramdisk
825 36 char Netlink support
826 0 = /dev/route Routing, device updates, kernel to user
827 1 = /dev/skip enSKIP security cache control
828 3 = /dev/fwmonitor Firewall packet copies
829 16 = /dev/tap0 First Ethertap device
831 31 = /dev/tap15 16th Ethertap device
832 36 block MCA ESDI hard disk
833 0 = /dev/eda First ESDI disk whole disk
834 64 = /dev/edb Second ESDI disk whole disk
837 Partitions are handled in the same way as IDE disks
838 (see major number 3).
841 0 = /dev/ht0 First IDE tape
842 1 = /dev/ht1 Second IDE tape
844 128 = /dev/nht0 First IDE tape, no rewind-on-close
845 129 = /dev/nht1 Second IDE tape, no rewind-on-close
848 Currently, only one IDE tape drive is supported.
850 37 block Zorro II ramdisk
851 0 = /dev/z2ram Zorro II ramdisk
853 38 char Myricom PCI Myrinet board
854 0 = /dev/mlanai0 First Myrinet board
855 1 = /dev/mlanai1 Second Myrinet board
858 This device is used for status query, board control
859 and "user level packet I/O." This board is also
860 accessible as a standard networking "eth" device.
862 38 block Reserved for Linux/AP+
864 39 char ML-16P experimental I/O board
865 0 = /dev/ml16pa-a0 First card, first analog channel
866 1 = /dev/ml16pa-a1 First card, second analog channel
868 15 = /dev/ml16pa-a15 First card, 16th analog channel
869 16 = /dev/ml16pa-d First card, digital lines
870 17 = /dev/ml16pa-c0 First card, first counter/timer
871 18 = /dev/ml16pa-c1 First card, second counter/timer
872 19 = /dev/ml16pa-c2 First card, third counter/timer
873 32 = /dev/ml16pb-a0 Second card, first analog channel
874 33 = /dev/ml16pb-a1 Second card, second analog channel
876 47 = /dev/ml16pb-a15 Second card, 16th analog channel
877 48 = /dev/ml16pb-d Second card, digital lines
878 49 = /dev/ml16pb-c0 Second card, first counter/timer
879 50 = /dev/ml16pb-c1 Second card, second counter/timer
880 51 = /dev/ml16pb-c2 Second card, third counter/timer
882 39 block Reserved for Linux/AP+
884 40 char Matrox Meteor frame grabber {2.6}
885 0 = /dev/mmetfgrab Matrox Meteor frame grabber
886 40 block Syquest EZ135 parallel port removable drive
887 0 = /dev/eza Parallel EZ135 drive, whole disk
889 This device is obsolete and will be removed in a
890 future version of Linux. It has been replaced with
891 the parallel port IDE disk driver at major number 45.
892 Partitions are handled in the same way as IDE disks
893 (see major number 3).
895 41 char Yet Another Micro Monitor
896 0 = /dev/yamm Yet Another Micro Monitor
897 41 block MicroSolutions BackPack parallel port CD-ROM
898 0 = /dev/bpcd BackPack CD-ROM
900 This device is obsolete and will be removed in a
901 future version of Linux. It has been replaced with
902 the parallel port ATAPI CD-ROM driver at major number 46.
904 42 char Demo/sample use
905 42 block Demo/sample use
907 This number is intended for use in sample code, as
908 well as a general "example" device number. It
909 should never be used for a device driver that is being
910 distributed; either obtain an official number or use
911 the local/experimental range. The sudden addition or
912 removal of a driver with this number should not cause
913 ill effects to the system (bugs excepted.)
915 IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
916 DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
918 43 char isdn4linux virtual modem
919 0 = /dev/ttyI0 First virtual modem
921 63 = /dev/ttyI63 64th virtual modem
922 43 block Network block devices
923 0 = /dev/nb0 First network block device
924 1 = /dev/nb1 Second network block device
927 Network Block Device is somehow similar to loopback
928 devices: If you read from it, it sends packet across
929 network asking server for data. If you write to it, it
930 sends packet telling server to write. It could be used
931 to mounting filesystems over the net, swapping over
932 the net, implementing block device in userland etc.
934 44 char isdn4linux virtual modem - alternate devices
935 0 = /dev/cui0 Callout device for ttyI0
937 63 = /dev/cui63 Callout device for ttyI63
938 44 block Flash Translation Layer (FTL) filesystems
939 0 = /dev/ftla FTL on first Memory Technology Device
940 16 = /dev/ftlb FTL on second Memory Technology Device
941 32 = /dev/ftlc FTL on third Memory Technology Device
943 240 = /dev/ftlp FTL on 16th Memory Technology Device
945 Partitions are handled in the same way as for IDE
946 disks (see major number 3) expect that the partition
947 limit is 15 rather than 63 per disk (same as SCSI.)
949 45 char isdn4linux ISDN BRI driver
950 0 = /dev/isdn0 First virtual B channel raw data
952 63 = /dev/isdn63 64th virtual B channel raw data
953 64 = /dev/isdnctrl0 First channel control/debug
955 127 = /dev/isdnctrl63 64th channel control/debug
957 128 = /dev/ippp0 First SyncPPP device
959 191 = /dev/ippp63 64th SyncPPP device
961 255 = /dev/isdninfo ISDN monitor interface
962 45 block Parallel port IDE disk devices
963 0 = /dev/pda First parallel port IDE disk
964 16 = /dev/pdb Second parallel port IDE disk
965 32 = /dev/pdc Third parallel port IDE disk
966 48 = /dev/pdd Fourth parallel port IDE disk
968 Partitions are handled in the same way as for IDE
969 disks (see major number 3) except that the partition
970 limit is 15 rather than 63 per disk.
972 46 char Comtrol Rocketport serial card
973 0 = /dev/ttyR0 First Rocketport port
974 1 = /dev/ttyR1 Second Rocketport port
976 46 block Parallel port ATAPI CD-ROM devices
977 0 = /dev/pcd0 First parallel port ATAPI CD-ROM
978 1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
979 2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
980 3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
982 47 char Comtrol Rocketport serial card - alternate devices
983 0 = /dev/cur0 Callout device for ttyR0
984 1 = /dev/cur1 Callout device for ttyR1
986 47 block Parallel port ATAPI disk devices
987 0 = /dev/pf0 First parallel port ATAPI disk
988 1 = /dev/pf1 Second parallel port ATAPI disk
989 2 = /dev/pf2 Third parallel port ATAPI disk
990 3 = /dev/pf3 Fourth parallel port ATAPI disk
992 This driver is intended for floppy disks and similar
993 devices and hence does not support partitioning.
995 48 char SDL RISCom serial card
996 0 = /dev/ttyL0 First RISCom port
997 1 = /dev/ttyL1 Second RISCom port
999 48 block Mylex DAC960 PCI RAID controller; first controller
1000 0 = /dev/rd/c0d0 First disk, whole disk
1001 8 = /dev/rd/c0d1 Second disk, whole disk
1003 248 = /dev/rd/c0d31 32nd disk, whole disk
1006 0 = /dev/rd/c?d? Whole disk
1007 1 = /dev/rd/c?d?p1 First partition
1009 7 = /dev/rd/c?d?p7 Seventh partition
1011 49 char SDL RISCom serial card - alternate devices
1012 0 = /dev/cul0 Callout device for ttyL0
1013 1 = /dev/cul1 Callout device for ttyL1
1015 49 block Mylex DAC960 PCI RAID controller; second controller
1016 0 = /dev/rd/c1d0 First disk, whole disk
1017 8 = /dev/rd/c1d1 Second disk, whole disk
1019 248 = /dev/rd/c1d31 32nd disk, whole disk
1021 Partitions are handled as for major 48.
1023 50 char Reserved for GLINT
1025 50 block Mylex DAC960 PCI RAID controller; third controller
1026 0 = /dev/rd/c2d0 First disk, whole disk
1027 8 = /dev/rd/c2d1 Second disk, whole disk
1029 248 = /dev/rd/c2d31 32nd disk, whole disk
1031 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1032 0 = /dev/bc0 First Baycom radio modem
1033 1 = /dev/bc1 Second Baycom radio modem
1035 51 block Mylex DAC960 PCI RAID controller; fourth controller
1036 0 = /dev/rd/c3d0 First disk, whole disk
1037 8 = /dev/rd/c3d1 Second disk, whole disk
1039 248 = /dev/rd/c3d31 32nd disk, whole disk
1041 Partitions are handled as for major 48.
1043 52 char Spellcaster DataComm/BRI ISDN card
1044 0 = /dev/dcbri0 First DataComm card
1045 1 = /dev/dcbri1 Second DataComm card
1046 2 = /dev/dcbri2 Third DataComm card
1047 3 = /dev/dcbri3 Fourth DataComm card
1048 52 block Mylex DAC960 PCI RAID controller; fifth controller
1049 0 = /dev/rd/c4d0 First disk, whole disk
1050 8 = /dev/rd/c4d1 Second disk, whole disk
1052 248 = /dev/rd/c4d31 32nd disk, whole disk
1054 Partitions are handled as for major 48.
1056 53 char BDM interface for remote debugging MC683xx microcontrollers
1057 0 = /dev/pd_bdm0 PD BDM interface on lp0
1058 1 = /dev/pd_bdm1 PD BDM interface on lp1
1059 2 = /dev/pd_bdm2 PD BDM interface on lp2
1060 4 = /dev/icd_bdm0 ICD BDM interface on lp0
1061 5 = /dev/icd_bdm1 ICD BDM interface on lp1
1062 6 = /dev/icd_bdm2 ICD BDM interface on lp2
1064 This device is used for the interfacing to the MC683xx
1065 microcontrollers via Background Debug Mode by use of a
1066 Parallel Port interface. PD is the Motorola Public
1067 Domain Interface and ICD is the commercial interface
1070 53 block Mylex DAC960 PCI RAID controller; sixth controller
1071 0 = /dev/rd/c5d0 First disk, whole disk
1072 8 = /dev/rd/c5d1 Second disk, whole disk
1074 248 = /dev/rd/c5d31 32nd disk, whole disk
1076 Partitions are handled as for major 48.
1078 54 char Electrocardiognosis Holter serial card
1079 0 = /dev/holter0 First Holter port
1080 1 = /dev/holter1 Second Holter port
1081 2 = /dev/holter2 Third Holter port
1083 A custom serial card used by Electrocardiognosis SRL
1084 <mseritan@ottonel.pub.ro> to transfer data from Holter
1085 24-hour heart monitoring equipment.
1087 54 block Mylex DAC960 PCI RAID controller; seventh controller
1088 0 = /dev/rd/c6d0 First disk, whole disk
1089 8 = /dev/rd/c6d1 Second disk, whole disk
1091 248 = /dev/rd/c6d31 32nd disk, whole disk
1093 Partitions are handled as for major 48.
1095 55 char DSP56001 digital signal processor
1096 0 = /dev/dsp56k First DSP56001
1097 55 block Mylex DAC960 PCI RAID controller; eigth controller
1098 0 = /dev/rd/c7d0 First disk, whole disk
1099 8 = /dev/rd/c7d1 Second disk, whole disk
1101 248 = /dev/rd/c7d31 32nd disk, whole disk
1103 Partitions are handled as for major 48.
1105 56 char Apple Desktop Bus
1106 0 = /dev/adb ADB bus control
1108 Additional devices will be added to this number, all
1109 starting with /dev/adb.
1111 56 block Fifth IDE hard disk/CD-ROM interface
1112 0 = /dev/hdi Master: whole disk (or CD-ROM)
1113 64 = /dev/hdj Slave: whole disk (or CD-ROM)
1115 Partitions are handled the same way as for the first
1116 interface (see major number 3).
1118 57 char Hayes ESP serial card
1119 0 = /dev/ttyP0 First ESP port
1120 1 = /dev/ttyP1 Second ESP port
1123 57 block Sixth IDE hard disk/CD-ROM interface
1124 0 = /dev/hdk Master: whole disk (or CD-ROM)
1125 64 = /dev/hdl Slave: whole disk (or CD-ROM)
1127 Partitions are handled the same way as for the first
1128 interface (see major number 3).
1130 58 char Hayes ESP serial card - alternate devices
1131 0 = /dev/cup0 Callout device for ttyP0
1132 1 = /dev/cup1 Callout device for ttyP1
1134 58 block Reserved for logical volume manager
1136 59 char sf firewall package
1137 0 = /dev/firewall Communication with sf kernel module
1139 59 block Generic PDA filesystem device
1140 0 = /dev/pda0 First PDA device
1141 1 = /dev/pda1 Second PDA device
1144 The pda devices are used to mount filesystems on
1145 remote pda's (basically slow handheld machines with
1146 proprietary OS's and limited memory and storage
1147 running small fs translation drivers) through serial /
1148 IRDA / parallel links.
1150 NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1152 60-63 char LOCAL/EXPERIMENTAL USE
1153 60-63 block LOCAL/EXPERIMENTAL USE
1154 Allocated for local/experimental use. For devices not
1155 assigned official numbers, these ranges should be
1156 used in order to avoid conflicting with future assignments.
1158 64 char ENskip kernel encryption package
1159 0 = /dev/enskip Communication with ENskip kernel module
1161 64 block Scramdisk/DriveCrypt encrypted devices
1162 0 = /dev/scramdisk/master Master node for ioctls
1163 1 = /dev/scramdisk/1 First encrypted device
1164 2 = /dev/scramdisk/2 Second encrypted device
1166 255 = /dev/scramdisk/255 255th encrypted device
1168 The filename of the encrypted container and the passwords
1169 are sent via ioctls (using the sdmount tool) to the master
1170 node which then activates them via one of the
1171 /dev/scramdisk/x nodes for loopback mounting (all handled
1172 through the sdmount tool).
1174 Requested by: andy@scramdisklinux.org
1176 65 char Sundance "plink" Transputer boards (obsolete, unused)
1177 0 = /dev/plink0 First plink device
1178 1 = /dev/plink1 Second plink device
1179 2 = /dev/plink2 Third plink device
1180 3 = /dev/plink3 Fourth plink device
1181 64 = /dev/rplink0 First plink device, raw
1182 65 = /dev/rplink1 Second plink device, raw
1183 66 = /dev/rplink2 Third plink device, raw
1184 67 = /dev/rplink3 Fourth plink device, raw
1185 128 = /dev/plink0d First plink device, debug
1186 129 = /dev/plink1d Second plink device, debug
1187 130 = /dev/plink2d Third plink device, debug
1188 131 = /dev/plink3d Fourth plink device, debug
1189 192 = /dev/rplink0d First plink device, raw, debug
1190 193 = /dev/rplink1d Second plink device, raw, debug
1191 194 = /dev/rplink2d Third plink device, raw, debug
1192 195 = /dev/rplink3d Fourth plink device, raw, debug
1194 This is a commercial driver; contact James Howes
1195 <jth@prosig.demon.co.uk> for information.
1197 65 block SCSI disk devices (16-31)
1198 0 = /dev/sdq 17th SCSI disk whole disk
1199 16 = /dev/sdr 18th SCSI disk whole disk
1200 32 = /dev/sds 19th SCSI disk whole disk
1202 240 = /dev/sdaf 32nd SCSI disk whole disk
1204 Partitions are handled in the same way as for IDE
1205 disks (see major number 3) except that the limit on
1208 66 char YARC PowerPC PCI coprocessor card
1209 0 = /dev/yppcpci0 First YARC card
1210 1 = /dev/yppcpci1 Second YARC card
1213 66 block SCSI disk devices (32-47)
1214 0 = /dev/sdag 33th SCSI disk whole disk
1215 16 = /dev/sdah 34th SCSI disk whole disk
1216 32 = /dev/sdai 35th SCSI disk whole disk
1218 240 = /dev/sdav 48nd SCSI disk whole disk
1220 Partitions are handled in the same way as for IDE
1221 disks (see major number 3) except that the limit on
1224 67 char Coda network file system
1225 0 = /dev/cfs0 Coda cache manager
1227 See http://www.coda.cs.cmu.edu for information about Coda.
1229 67 block SCSI disk devices (48-63)
1230 0 = /dev/sdaw 49th SCSI disk whole disk
1231 16 = /dev/sdax 50th SCSI disk whole disk
1232 32 = /dev/sday 51st SCSI disk whole disk
1234 240 = /dev/sdbl 64th SCSI disk whole disk
1236 Partitions are handled in the same way as for IDE
1237 disks (see major number 3) except that the limit on
1240 68 char CAPI 2.0 interface
1241 0 = /dev/capi20 Control device
1242 1 = /dev/capi20.00 First CAPI 2.0 application
1243 2 = /dev/capi20.01 Second CAPI 2.0 application
1245 20 = /dev/capi20.19 19th CAPI 2.0 application
1247 ISDN CAPI 2.0 driver for use with CAPI 2.0
1248 applications; currently supports the AVM B1 card.
1250 68 block SCSI disk devices (64-79)
1251 0 = /dev/sdbm 65th SCSI disk whole disk
1252 16 = /dev/sdbn 66th SCSI disk whole disk
1253 32 = /dev/sdbo 67th SCSI disk whole disk
1255 240 = /dev/sdcb 80th SCSI disk whole disk
1257 Partitions are handled in the same way as for IDE
1258 disks (see major number 3) except that the limit on
1261 69 char MA16 numeric accelerator card
1262 0 = /dev/ma16 Board memory access
1264 69 block SCSI disk devices (80-95)
1265 0 = /dev/sdcc 81st SCSI disk whole disk
1266 16 = /dev/sdcd 82nd SCSI disk whole disk
1267 32 = /dev/sdce 83th SCSI disk whole disk
1269 240 = /dev/sdcr 96th SCSI disk whole disk
1271 Partitions are handled in the same way as for IDE
1272 disks (see major number 3) except that the limit on
1275 70 char SpellCaster Protocol Services Interface
1276 0 = /dev/apscfg Configuration interface
1277 1 = /dev/apsauth Authentication interface
1278 2 = /dev/apslog Logging interface
1279 3 = /dev/apsdbg Debugging interface
1280 64 = /dev/apsisdn ISDN command interface
1281 65 = /dev/apsasync Async command interface
1282 128 = /dev/apsmon Monitor interface
1284 70 block SCSI disk devices (96-111)
1285 0 = /dev/sdcs 97th SCSI disk whole disk
1286 16 = /dev/sdct 98th SCSI disk whole disk
1287 32 = /dev/sdcu 99th SCSI disk whole disk
1289 240 = /dev/sddh 112nd SCSI disk whole disk
1291 Partitions are handled in the same way as for IDE
1292 disks (see major number 3) except that the limit on
1295 71 char Computone IntelliPort II serial card
1296 0 = /dev/ttyF0 IntelliPort II board 0, port 0
1297 1 = /dev/ttyF1 IntelliPort II board 0, port 1
1299 63 = /dev/ttyF63 IntelliPort II board 0, port 63
1300 64 = /dev/ttyF64 IntelliPort II board 1, port 0
1301 65 = /dev/ttyF65 IntelliPort II board 1, port 1
1303 127 = /dev/ttyF127 IntelliPort II board 1, port 63
1304 128 = /dev/ttyF128 IntelliPort II board 2, port 0
1305 129 = /dev/ttyF129 IntelliPort II board 2, port 1
1307 191 = /dev/ttyF191 IntelliPort II board 2, port 63
1308 192 = /dev/ttyF192 IntelliPort II board 3, port 0
1309 193 = /dev/ttyF193 IntelliPort II board 3, port 1
1311 255 = /dev/ttyF255 IntelliPort II board 3, port 63
1313 71 block SCSI disk devices (112-127)
1314 0 = /dev/sddi 113th SCSI disk whole disk
1315 16 = /dev/sddj 114th SCSI disk whole disk
1316 32 = /dev/sddk 115th SCSI disk whole disk
1318 240 = /dev/sddx 128th SCSI disk whole disk
1320 Partitions are handled in the same way as for IDE
1321 disks (see major number 3) except that the limit on
1324 72 char Computone IntelliPort II serial card - alternate devices
1325 0 = /dev/cuf0 Callout device for ttyF0
1326 1 = /dev/cuf1 Callout device for ttyF1
1328 63 = /dev/cuf63 Callout device for ttyF63
1329 64 = /dev/cuf64 Callout device for ttyF64
1330 65 = /dev/cuf65 Callout device for ttyF65
1332 127 = /dev/cuf127 Callout device for ttyF127
1333 128 = /dev/cuf128 Callout device for ttyF128
1334 129 = /dev/cuf129 Callout device for ttyF129
1336 191 = /dev/cuf191 Callout device for ttyF191
1337 192 = /dev/cuf192 Callout device for ttyF192
1338 193 = /dev/cuf193 Callout device for ttyF193
1340 255 = /dev/cuf255 Callout device for ttyF255
1342 72 block Compaq Intelligent Drive Array, first controller
1343 0 = /dev/ida/c0d0 First logical drive whole disk
1344 16 = /dev/ida/c0d1 Second logical drive whole disk
1346 240 = /dev/ida/c0d15 16th logical drive whole disk
1348 Partitions are handled the same way as for Mylex
1349 DAC960 (see major number 48) except that the limit on
1352 73 char Computone IntelliPort II serial card - control devices
1353 0 = /dev/ip2ipl0 Loadware device for board 0
1354 1 = /dev/ip2stat0 Status device for board 0
1355 4 = /dev/ip2ipl1 Loadware device for board 1
1356 5 = /dev/ip2stat1 Status device for board 1
1357 8 = /dev/ip2ipl2 Loadware device for board 2
1358 9 = /dev/ip2stat2 Status device for board 2
1359 12 = /dev/ip2ipl3 Loadware device for board 3
1360 13 = /dev/ip2stat3 Status device for board 3
1362 73 block Compaq Intelligent Drive Array, second controller
1363 0 = /dev/ida/c1d0 First logical drive whole disk
1364 16 = /dev/ida/c1d1 Second logical drive whole disk
1366 240 = /dev/ida/c1d15 16th logical drive whole disk
1368 Partitions are handled the same way as for Mylex
1369 DAC960 (see major number 48) except that the limit on
1373 0 = /dev/SCI/0 SCI device 0
1374 1 = /dev/SCI/1 SCI device 1
1377 Currently for Dolphin Interconnect Solutions' PCI-SCI
1380 74 block Compaq Intelligent Drive Array, third controller
1381 0 = /dev/ida/c2d0 First logical drive whole disk
1382 16 = /dev/ida/c2d1 Second logical drive whole disk
1384 240 = /dev/ida/c2d15 16th logical drive whole disk
1386 Partitions are handled the same way as for Mylex
1387 DAC960 (see major number 48) except that the limit on
1390 75 char Specialix IO8+ serial card
1391 0 = /dev/ttyW0 First IO8+ port, first card
1392 1 = /dev/ttyW1 Second IO8+ port, first card
1394 8 = /dev/ttyW8 First IO8+ port, second card
1397 75 block Compaq Intelligent Drive Array, fourth controller
1398 0 = /dev/ida/c3d0 First logical drive whole disk
1399 16 = /dev/ida/c3d1 Second logical drive whole disk
1401 240 = /dev/ida/c3d15 16th logical drive whole disk
1403 Partitions are handled the same way as for Mylex
1404 DAC960 (see major number 48) except that the limit on
1407 76 char Specialix IO8+ serial card - alternate devices
1408 0 = /dev/cuw0 Callout device for ttyW0
1409 1 = /dev/cuw1 Callout device for ttyW1
1411 8 = /dev/cuw8 Callout device for ttyW8
1414 76 block Compaq Intelligent Drive Array, fifth controller
1415 0 = /dev/ida/c4d0 First logical drive whole disk
1416 16 = /dev/ida/c4d1 Second logical drive whole disk
1418 240 = /dev/ida/c4d15 16th logical drive whole disk
1420 Partitions are handled the same way as for Mylex
1421 DAC960 (see major number 48) except that the limit on
1425 77 char ComScire Quantum Noise Generator
1426 0 = /dev/qng ComScire Quantum Noise Generator
1428 77 block Compaq Intelligent Drive Array, sixth controller
1429 0 = /dev/ida/c5d0 First logical drive whole disk
1430 16 = /dev/ida/c5d1 Second logical drive whole disk
1432 240 = /dev/ida/c5d15 16th logical drive whole disk
1434 Partitions are handled the same way as for Mylex
1435 DAC960 (see major number 48) except that the limit on
1439 78 char PAM Software's multimodem boards
1440 0 = /dev/ttyM0 First PAM modem
1441 1 = /dev/ttyM1 Second PAM modem
1444 78 block Compaq Intelligent Drive Array, seventh controller
1445 0 = /dev/ida/c6d0 First logical drive whole disk
1446 16 = /dev/ida/c6d1 Second logical drive whole disk
1448 240 = /dev/ida/c6d15 16th logical drive whole disk
1450 Partitions are handled the same way as for Mylex
1451 DAC960 (see major number 48) except that the limit on
1455 79 char PAM Software's multimodem boards - alternate devices
1456 0 = /dev/cum0 Callout device for ttyM0
1457 1 = /dev/cum1 Callout device for ttyM1
1460 79 block Compaq Intelligent Drive Array, eigth controller
1461 0 = /dev/ida/c7d0 First logical drive whole disk
1462 16 = /dev/ida/c7d1 Second logical drive whole disk
1464 240 = /dev/ida/c715 16th logical drive whole disk
1466 Partitions are handled the same way as for Mylex
1467 DAC960 (see major number 48) except that the limit on
1471 80 char Photometrics AT200 CCD camera
1472 0 = /dev/at200 Photometrics AT200 CCD camera
1474 80 block I2O hard disk
1475 0 = /dev/i2o/hda First I2O hard disk, whole disk
1476 16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1478 240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1480 Partitions are handled in the same way as for IDE
1481 disks (see major number 3) except that the limit on
1485 0 = /dev/video0 Video capture/overlay device
1487 63 = /dev/video63 Video capture/overlay device
1488 64 = /dev/radio0 Radio device
1490 127 = /dev/radio63 Radio device
1491 192 = /dev/vtx0 Teletext device
1493 223 = /dev/vtx31 Teletext device
1494 224 = /dev/vbi0 Vertical blank interrupt
1496 255 = /dev/vbi31 Vertical blank interrupt
1498 81 block I2O hard disk
1499 0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1500 16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1502 240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1504 Partitions are handled in the same way as for IDE
1505 disks (see major number 3) except that the limit on
1508 82 char WiNRADiO communications receiver card
1509 0 = /dev/winradio0 First WiNRADiO card
1510 1 = /dev/winradio1 Second WiNRADiO card
1513 The driver and documentation may be obtained from
1514 http://www.proximity.com.au/~brian/winradio/
1516 82 block I2O hard disk
1517 0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1518 16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1520 240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1522 Partitions are handled in the same way as for IDE
1523 disks (see major number 3) except that the limit on
1526 83 char Matrox mga_vid video driver
1527 0 = /dev/mga_vid0 1st video card
1528 1 = /dev/mga_vid1 2nd video card
1529 2 = /dev/mga_vid2 3rd video card
1531 15 = /dev/mga_vid15 16th video card
1533 83 block I2O hard disk
1534 0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1535 16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1537 240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
1539 Partitions are handled in the same way as for IDE
1540 disks (see major number 3) except that the limit on
1543 84 char Ikon 1011[57] Versatec Greensheet Interface
1544 0 = /dev/ihcp0 First Greensheet port
1545 1 = /dev/ihcp1 Second Greensheet port
1547 84 block I2O hard disk
1548 0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1549 16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1551 240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1553 Partitions are handled in the same way as for IDE
1554 disks (see major number 3) except that the limit on
1557 85 char Linux/SGI shared memory input queue
1558 0 = /dev/shmiq Master shared input queue
1559 1 = /dev/qcntl0 First device pushed
1560 2 = /dev/qcntl1 Second device pushed
1563 85 block I2O hard disk
1564 0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1565 16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1567 240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1569 Partitions are handled in the same way as for IDE
1570 disks (see major number 3) except that the limit on
1573 86 char SCSI media changer
1574 0 = /dev/sch0 First SCSI media changer
1575 1 = /dev/sch1 Second SCSI media changer
1578 86 block I2O hard disk
1579 0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1580 16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1582 240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1584 Partitions are handled in the same way as for IDE
1585 disks (see major number 3) except that the limit on
1588 87 char Sony Control-A1 stereo control bus
1589 0 = /dev/controla0 First device on chain
1590 1 = /dev/controla1 Second device on chain
1593 87 block I2O hard disk
1594 0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1595 16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1597 240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1599 Partitions are handled in the same way as for IDE
1600 disks (see major number 3) except that the limit on
1603 88 char COMX synchronous serial card
1604 0 = /dev/comx0 COMX channel 0
1605 1 = /dev/comx1 COMX channel 1
1608 88 block Seventh IDE hard disk/CD-ROM interface
1609 0 = /dev/hdm Master: whole disk (or CD-ROM)
1610 64 = /dev/hdn Slave: whole disk (or CD-ROM)
1612 Partitions are handled the same way as for the first
1613 interface (see major number 3).
1615 89 char I2C bus interface
1616 0 = /dev/i2c-0 First I2C adapter
1617 1 = /dev/i2c-1 Second I2C adapter
1620 89 block Eighth IDE hard disk/CD-ROM interface
1621 0 = /dev/hdo Master: whole disk (or CD-ROM)
1622 64 = /dev/hdp Slave: whole disk (or CD-ROM)
1624 Partitions are handled the same way as for the first
1625 interface (see major number 3).
1627 90 char Memory Technology Device (RAM, ROM, Flash)
1628 0 = /dev/mtd0 First MTD (rw)
1629 1 = /dev/mtdr0 First MTD (ro)
1631 30 = /dev/mtd15 16th MTD (rw)
1632 31 = /dev/mtdr15 16th MTD (ro)
1634 90 block Ninth IDE hard disk/CD-ROM interface
1635 0 = /dev/hdq Master: whole disk (or CD-ROM)
1636 64 = /dev/hdr Slave: whole disk (or CD-ROM)
1638 Partitions are handled the same way as for the first
1639 interface (see major number 3).
1641 91 char CAN-Bus devices
1642 0 = /dev/can0 First CAN-Bus controller
1643 1 = /dev/can1 Second CAN-Bus controller
1646 91 block Tenth IDE hard disk/CD-ROM interface
1647 0 = /dev/hds Master: whole disk (or CD-ROM)
1648 64 = /dev/hdt Slave: whole disk (or CD-ROM)
1650 Partitions are handled the same way as for the first
1651 interface (see major number 3).
1653 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1655 92 block PPDD encrypted disk driver
1656 0 = /dev/ppdd0 First encrypted disk
1657 1 = /dev/ppdd1 Second encrypted disk
1660 Partitions are handled in the same way as for IDE
1661 disks (see major number 3) except that the limit on
1664 93 char IBM Smart Capture Card frame grabber {2.6}
1665 0 = /dev/iscc0 First Smart Capture Card
1666 1 = /dev/iscc1 Second Smart Capture Card
1668 128 = /dev/isccctl0 First Smart Capture Card control
1669 129 = /dev/isccctl1 Second Smart Capture Card control
1672 93 block NAND Flash Translation Layer filesystem
1673 0 = /dev/nftla First NFTL layer
1674 16 = /dev/nftlb Second NFTL layer
1676 240 = /dev/nftlp 16th NTFL layer
1678 94 char miroVIDEO DC10/30 capture/playback device {2.6}
1679 0 = /dev/dcxx0 First capture card
1680 1 = /dev/dcxx1 Second capture card
1683 94 block IBM S/390 DASD block storage
1684 0 = /dev/dasda First DASD device, major
1685 1 = /dev/dasda1 First DASD device, block 1
1686 2 = /dev/dasda2 First DASD device, block 2
1687 3 = /dev/dasda3 First DASD device, block 3
1688 4 = /dev/dasdb Second DASD device, major
1689 5 = /dev/dasdb1 Second DASD device, block 1
1690 6 = /dev/dasdb2 Second DASD device, block 2
1691 7 = /dev/dasdb3 Second DASD device, block 3
1695 0 = /dev/ipl Filter control device/log file
1696 1 = /dev/ipnat NAT control device/log file
1697 2 = /dev/ipstate State information log file
1698 3 = /dev/ipauth Authentication control device/log file
1701 96 char Parallel port ATAPI tape devices
1702 0 = /dev/pt0 First parallel port ATAPI tape
1703 1 = /dev/pt1 Second parallel port ATAPI tape
1705 128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1706 129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1709 96 block Inverse NAND Flash Translation Layer
1710 0 = /dev/inftla First INFTL layer
1711 16 = /dev/inftlb Second INFTL layer
1713 240 = /dev/inftlp 16th INTFL layer
1715 97 char Parallel port generic ATAPI interface
1716 0 = /dev/pg0 First parallel port ATAPI device
1717 1 = /dev/pg1 Second parallel port ATAPI device
1718 2 = /dev/pg2 Third parallel port ATAPI device
1719 3 = /dev/pg3 Fourth parallel port ATAPI device
1721 These devices support the same API as the generic SCSI
1724 97 block Packet writing for CD/DVD devices
1725 0 = /dev/pktcdvd0 First packet-writing module
1726 1 = /dev/pktcdvd1 Second packet-writing module
1729 98 char Control and Measurement Device (comedi)
1730 0 = /dev/comedi0 First comedi device
1731 1 = /dev/comedi1 Second comedi device
1734 See http://stm.lbl.gov/comedi or http://www.llp.fu-berlin.de/.
1736 98 block User-mode virtual block device
1737 0 = /dev/ubda First user-mode block device
1738 16 = /dev/udbb Second user-mode block device
1741 Partitions are handled in the same way as for IDE
1742 disks (see major number 3) except that the limit on
1745 This device is used by the user-mode virtual kernel port.
1747 99 char Raw parallel ports
1748 0 = /dev/parport0 First parallel port
1749 1 = /dev/parport1 Second parallel port
1752 99 block JavaStation flash disk
1753 0 = /dev/jsfd JavaStation flash disk
1755 100 char Telephony for Linux
1756 0 = /dev/phone0 First telephony device
1757 1 = /dev/phone1 Second telephony device
1760 101 char Motorola DSP 56xxx board
1761 0 = /dev/mdspstat Status information
1762 1 = /dev/mdsp1 First DSP board I/O controls
1764 16 = /dev/mdsp16 16th DSP board I/O controls
1766 101 block AMI HyperDisk RAID controller
1767 0 = /dev/amiraid/ar0 First array whole disk
1768 16 = /dev/amiraid/ar1 Second array whole disk
1770 240 = /dev/amiraid/ar15 16th array whole disk
1772 For each device, partitions are added as:
1773 0 = /dev/amiraid/ar? Whole disk
1774 1 = /dev/amiraid/ar?p1 First partition
1775 2 = /dev/amiraid/ar?p2 Second partition
1777 15 = /dev/amiraid/ar?p15 15th partition
1779 102 char Philips SAA5249 Teletext signal decoder {2.6}
1780 0 = /dev/tlk0 First Teletext decoder
1781 1 = /dev/tlk1 Second Teletext decoder
1782 2 = /dev/tlk2 Third Teletext decoder
1783 3 = /dev/tlk3 Fourth Teletext decoder
1785 102 block Compressed block device
1786 0 = /dev/cbd/a First compressed block device, whole device
1787 16 = /dev/cbd/b Second compressed block device, whole device
1789 240 = /dev/cbd/p 16th compressed block device, whole device
1791 Partitions are handled in the same way as for IDE
1792 disks (see major number 3) except that the limit on
1795 103 char Arla network file system
1796 0 = /dev/nnpfs0 First NNPFS device
1797 1 = /dev/nnpfs1 Second NNPFS device
1799 Arla is a free clone of the Andrew File System, AFS.
1800 The NNPFS device gives user mode filesystem
1801 implementations a kernel presence for caching and easy
1802 mounting. For more information about the project,
1803 write to <arla-drinkers@stacken.kth.se> or see
1804 http://www.stacken.kth.se/project/arla/
1806 103 block Audit device
1807 0 = /dev/audit Audit device
1809 104 char Flash BIOS support
1811 104 block Compaq Next Generation Drive Array, first controller
1812 0 = /dev/cciss/c0d0 First logical drive, whole disk
1813 16 = /dev/cciss/c0d1 Second logical drive, whole disk
1815 240 = /dev/cciss/c0d15 16th logical drive, whole disk
1817 Partitions are handled the same way as for Mylex
1818 DAC960 (see major number 48) except that the limit on
1821 105 char Comtrol VS-1000 serial controller
1822 0 = /dev/ttyV0 First VS-1000 port
1823 1 = /dev/ttyV1 Second VS-1000 port
1826 105 block Compaq Next Generation Drive Array, second controller
1827 0 = /dev/cciss/c1d0 First logical drive, whole disk
1828 16 = /dev/cciss/c1d1 Second logical drive, whole disk
1830 240 = /dev/cciss/c1d15 16th logical drive, whole disk
1832 Partitions are handled the same way as for Mylex
1833 DAC960 (see major number 48) except that the limit on
1836 106 char Comtrol VS-1000 serial controller - alternate devices
1837 0 = /dev/cuv0 First VS-1000 port
1838 1 = /dev/cuv1 Second VS-1000 port
1841 106 block Compaq Next Generation Drive Array, third controller
1842 0 = /dev/cciss/c2d0 First logical drive, whole disk
1843 16 = /dev/cciss/c2d1 Second logical drive, whole disk
1845 240 = /dev/cciss/c2d15 16th logical drive, whole disk
1847 Partitions are handled the same way as for Mylex
1848 DAC960 (see major number 48) except that the limit on
1851 107 char 3Dfx Voodoo Graphics device
1852 0 = /dev/3dfx Primary 3Dfx graphics device
1854 107 block Compaq Next Generation Drive Array, fourth controller
1855 0 = /dev/cciss/c3d0 First logical drive, whole disk
1856 16 = /dev/cciss/c3d1 Second logical drive, whole disk
1858 240 = /dev/cciss/c3d15 16th logical drive, whole disk
1860 Partitions are handled the same way as for Mylex
1861 DAC960 (see major number 48) except that the limit on
1864 108 char Device independent PPP interface
1865 0 = /dev/ppp Device independent PPP interface
1867 108 block Compaq Next Generation Drive Array, fifth controller
1868 0 = /dev/cciss/c4d0 First logical drive, whole disk
1869 16 = /dev/cciss/c4d1 Second logical drive, whole disk
1871 240 = /dev/cciss/c4d15 16th logical drive, whole disk
1873 Partitions are handled the same way as for Mylex
1874 DAC960 (see major number 48) except that the limit on
1877 109 char Reserved for logical volume manager
1879 109 block Compaq Next Generation Drive Array, sixth controller
1880 0 = /dev/cciss/c5d0 First logical drive, whole disk
1881 16 = /dev/cciss/c5d1 Second logical drive, whole disk
1883 240 = /dev/cciss/c5d15 16th logical drive, whole disk
1885 Partitions are handled the same way as for Mylex
1886 DAC960 (see major number 48) except that the limit on
1889 110 char miroMEDIA Surround board
1890 0 = /dev/srnd0 First miroMEDIA Surround board
1891 1 = /dev/srnd1 Second miroMEDIA Surround board
1894 110 block Compaq Next Generation Drive Array, seventh controller
1895 0 = /dev/cciss/c6d0 First logical drive, whole disk
1896 16 = /dev/cciss/c6d1 Second logical drive, whole disk
1898 240 = /dev/cciss/c6d15 16th logical drive, whole disk
1900 Partitions are handled the same way as for Mylex
1901 DAC960 (see major number 48) except that the limit on
1904 111 char Philips SAA7146-based audio/video card {2.6}
1905 0 = /dev/av0 First A/V card
1906 1 = /dev/av1 Second A/V card
1909 111 block Compaq Next Generation Drive Array, eigth controller
1910 0 = /dev/cciss/c7d0 First logical drive, whole disk
1911 16 = /dev/cciss/c7d1 Second logical drive, whole disk
1913 240 = /dev/cciss/c7d15 16th logical drive, whole disk
1915 Partitions are handled the same way as for Mylex
1916 DAC960 (see major number 48) except that the limit on
1919 112 char ISI serial card
1920 0 = /dev/ttyM0 First ISI port
1921 1 = /dev/ttyM1 Second ISI port
1924 There is currently a device-naming conflict between
1925 these and PAM multimodems (major 78).
1927 112 block IBM iSeries virtual disk
1928 0 = /dev/iseries/vda First virtual disk, whole disk
1929 8 = /dev/iseries/vdb Second virtual disk, whole disk
1931 200 = /dev/iseries/vdz 26th virtual disk, whole disk
1932 208 = /dev/iseries/vdaa 27th virtual disk, whole disk
1934 248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
1936 Partitions are handled in the same way as for IDE
1937 disks (see major number 3) except that the limit on
1940 113 char ISI serial card - alternate devices
1941 0 = /dev/cum0 Callout device for ttyM0
1942 1 = /dev/cum1 Callout device for ttyM1
1945 113 block IBM iSeries virtual CD-ROM
1947 0 = /dev/iseries/vcda First virtual CD-ROM
1948 1 = /dev/iseries/vcdb Second virtual CD-ROM
1951 114 char Picture Elements ISE board
1952 0 = /dev/ise0 First ISE board
1953 1 = /dev/ise1 Second ISE board
1955 128 = /dev/isex0 Control node for first ISE board
1956 129 = /dev/isex1 Control node for second ISE board
1959 The ISE board is an embedded computer, optimized for
1960 image processing. The /dev/iseN nodes are the general
1961 I/O access to the board, the /dev/isex0 nodes command
1962 nodes used to control the board.
1964 114 block IDE BIOS powered software RAID interfaces such as the
1968 1 = /dev/ataraid/d0p1
1969 2 = /dev/ataraid/d0p2
1971 16 = /dev/ataraid/d1
1972 17 = /dev/ataraid/d1p1
1973 18 = /dev/ataraid/d1p2
1975 255 = /dev/ataraid/d15p15
1977 Partitions are handled in the same way as for IDE
1978 disks (see major number 3) except that the limit on
1981 115 char TI link cable devices (115 was formerly the console driver speaker)
1982 0 = /dev/tipar0 Parallel cable on first parallel port
1984 7 = /dev/tipar7 Parallel cable on seventh parallel port
1986 8 = /dev/tiser0 Serial cable on first serial port
1988 15 = /dev/tiser7 Serial cable on seventh serial port
1990 16 = /dev/tiusb0 First USB cable
1992 47 = /dev/tiusb31 32nd USB cable
1994 115 block NetWare (NWFS) Devices (0-255)
1996 The NWFS (NetWare) devices are used to present a
1997 collection of NetWare Mirror Groups or NetWare
1998 Partitions as a logical storage segment for
1999 use in mounting NetWare volumes. A maximum of
2000 256 NetWare volumes can be supported in a single
2003 http://www.kernel.org/pub/linux/kernel/people/jmerkey/nwfs
2005 0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
2006 1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
2007 2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
2009 255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
2011 116 char Advanced Linux Sound Driver (ALSA)
2013 116 block MicroMemory battery backed RAM adapter (NVRAM)
2014 Supports 16 boards, 15 paritions each.
2015 Requested by neilb at cse.unsw.edu.au.
2017 0 = /dev/umem/d0 Whole of first board
2018 1 = /dev/umem/d0p1 First partition of first board
2019 2 = /dev/umem/d0p2 Second partition of first board
2020 15 = /dev/umem/d0p15 15th partition of first board
2022 16 = /dev/umem/d1 Whole of second board
2023 17 = /dev/umem/d1p1 First partition of second board
2025 255= /dev/umem/d15p15 15th partition of 16th board.
2027 117 char COSA/SRP synchronous serial card
2028 0 = /dev/cosa0c0 1st board, 1st channel
2029 1 = /dev/cosa0c1 1st board, 2nd channel
2031 16 = /dev/cosa1c0 2nd board, 1st channel
2032 17 = /dev/cosa1c1 2nd board, 2nd channel
2035 117 block Enterprise Volume Management System (EVMS)
2037 The EVMS driver uses a layered, plug-in model to provide
2038 unparalleled flexibility and extensibility in managing
2039 storage. This allows for easy expansion or customization
2040 of various levels of volume management. Requested by
2041 Mark Peloquin (peloquin at us.ibm.com).
2043 Note: EVMS populates and manages all the devnodes in
2046 http://sf.net/projects/evms
2048 0 = /dev/evms/block_device EVMS block device
2049 1 = /dev/evms/legacyname1 First EVMS legacy device
2050 2 = /dev/evms/legacyname2 Second EVMS legacy device
2052 Both ranges can grow (down or up) until they meet.
2054 254 = /dev/evms/EVMSname2 Second EVMS native device
2055 255 = /dev/evms/EVMSname1 First EVMS native device
2057 Note: legacyname(s) are derived from the normal legacy
2058 device names. For example, /dev/hda5 would become
2061 118 char IBM Cryptographic Accelerator
2062 0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
2063 1 = /dev/ica0 IBMCA Device 0
2064 2 = /dev/ica1 IBMCA Device 1
2067 119 char VMware virtual network control
2068 0 = /dev/vnet0 1st virtual network
2069 1 = /dev/vnet1 2nd virtual network
2072 120-127 char LOCAL/EXPERIMENTAL USE
2073 120-127 block LOCAL/EXPERIMENTAL USE
2074 Allocated for local/experimental use. For devices not
2075 assigned official numbers, these ranges should be
2076 used in order to avoid conflicting with future assignments.
2078 128-135 char Unix98 PTY masters
2080 These devices should not have corresponding device
2081 nodes; instead they should be accessed through the
2082 /dev/ptmx cloning interface.
2085 128 block SCSI disk devices (128-143)
2086 0 = /dev/sddy 129th SCSI disk whole disk
2087 16 = /dev/sddz 130th SCSI disk whole disk
2088 32 = /dev/sdea 131th SCSI disk whole disk
2090 240 = /dev/sden 144th SCSI disk whole disk
2092 Partitions are handled in the same way as for IDE
2093 disks (see major number 3) except that the limit on
2097 129 block SCSI disk devices (144-159)
2098 0 = /dev/sdeo 145th SCSI disk whole disk
2099 16 = /dev/sdep 146th SCSI disk whole disk
2100 32 = /dev/sdeq 147th SCSI disk whole disk
2102 240 = /dev/sdfd 160th SCSI disk whole disk
2104 Partitions are handled in the same way as for IDE
2105 disks (see major number 3) except that the limit on
2108 130 char (Misc devices)
2110 130 block SCSI disk devices (160-175)
2111 0 = /dev/sdfe 161st SCSI disk whole disk
2112 16 = /dev/sdff 162nd SCSI disk whole disk
2113 32 = /dev/sdfg 163rd SCSI disk whole disk
2115 240 = /dev/sdft 176th SCSI disk whole disk
2117 Partitions are handled in the same way as for IDE
2118 disks (see major number 3) except that the limit on
2121 131 block SCSI disk devices (176-191)
2122 0 = /dev/sdfu 177th SCSI disk whole disk
2123 16 = /dev/sdfv 178th SCSI disk whole disk
2124 32 = /dev/sdfw 179th SCSI disk whole disk
2126 240 = /dev/sdgj 192nd SCSI disk whole disk
2128 Partitions are handled in the same way as for IDE
2129 disks (see major number 3) except that the limit on
2133 132 block SCSI disk devices (192-207)
2134 0 = /dev/sdgk 193rd SCSI disk whole disk
2135 16 = /dev/sdgl 194th SCSI disk whole disk
2136 32 = /dev/sdgm 195th SCSI disk whole disk
2138 240 = /dev/sdgz 208th SCSI disk whole disk
2140 Partitions are handled in the same way as for IDE
2141 disks (see major number 3) except that the limit on
2145 133 block SCSI disk devices (208-223)
2146 0 = /dev/sdha 209th SCSI disk whole disk
2147 16 = /dev/sdhb 210th SCSI disk whole disk
2148 32 = /dev/sdhc 211th SCSI disk whole disk
2150 240 = /dev/sdhp 224th SCSI disk whole disk
2152 Partitions are handled in the same way as for IDE
2153 disks (see major number 3) except that the limit on
2157 134 block SCSI disk devices (224-239)
2158 0 = /dev/sdhq 225th SCSI disk whole disk
2159 16 = /dev/sdhr 226th SCSI disk whole disk
2160 32 = /dev/sdhs 227th SCSI disk whole disk
2162 240 = /dev/sdif 240th SCSI disk whole disk
2164 Partitions are handled in the same way as for IDE
2165 disks (see major number 3) except that the limit on
2169 135 block SCSI disk devices (240-255)
2170 0 = /dev/sdig 241st SCSI disk whole disk
2171 16 = /dev/sdih 242nd SCSI disk whole disk
2172 32 = /dev/sdih 243rd SCSI disk whole disk
2174 240 = /dev/sdiv 256th SCSI disk whole disk
2176 Partitions are handled in the same way as for IDE
2177 disks (see major number 3) except that the limit on
2181 136-143 char Unix98 PTY slaves
2182 0 = /dev/pts/0 First Unix98 pseudo-TTY
2183 1 = /dev/pts/1 Second Unix98 pesudo-TTY
2186 These device nodes are automatically generated with
2187 the proper permissions and modes by mounting the
2188 devpts filesystem onto /dev/pts with the appropriate
2189 mount options (distribution dependent, however, on
2190 *most* distributions the appropriate options are
2191 "mode=0620,gid=<gid of the "tty" group>".)
2193 136 block Mylex DAC960 PCI RAID controller; ninth controller
2194 0 = /dev/rd/c8d0 First disk, whole disk
2195 8 = /dev/rd/c8d1 Second disk, whole disk
2197 248 = /dev/rd/c8d31 32nd disk, whole disk
2199 Partitions are handled as for major 48.
2201 137 block Mylex DAC960 PCI RAID controller; tenth controller
2202 0 = /dev/rd/c9d0 First disk, whole disk
2203 8 = /dev/rd/c9d1 Second disk, whole disk
2205 248 = /dev/rd/c9d31 32nd disk, whole disk
2207 Partitions are handled as for major 48.
2209 138 block Mylex DAC960 PCI RAID controller; eleventh controller
2210 0 = /dev/rd/c10d0 First disk, whole disk
2211 8 = /dev/rd/c10d1 Second disk, whole disk
2213 248 = /dev/rd/c10d31 32nd disk, whole disk
2215 Partitions are handled as for major 48.
2217 139 block Mylex DAC960 PCI RAID controller; twelfth controller
2218 0 = /dev/rd/c11d0 First disk, whole disk
2219 8 = /dev/rd/c11d1 Second disk, whole disk
2221 248 = /dev/rd/c11d31 32nd disk, whole disk
2223 Partitions are handled as for major 48.
2225 140 block Mylex DAC960 PCI RAID controller; thirteenth controller
2226 0 = /dev/rd/c12d0 First disk, whole disk
2227 8 = /dev/rd/c12d1 Second disk, whole disk
2229 248 = /dev/rd/c12d31 32nd disk, whole disk
2231 Partitions are handled as for major 48.
2233 141 block Mylex DAC960 PCI RAID controller; fourteenth controller
2234 0 = /dev/rd/c13d0 First disk, whole disk
2235 8 = /dev/rd/c13d1 Second disk, whole disk
2237 248 = /dev/rd/c13d31 32nd disk, whole disk
2239 Partitions are handled as for major 48.
2241 142 block Mylex DAC960 PCI RAID controller; fifteenth controller
2242 0 = /dev/rd/c14d0 First disk, whole disk
2243 8 = /dev/rd/c14d1 Second disk, whole disk
2245 248 = /dev/rd/c14d31 32nd disk, whole disk
2247 Partitions are handled as for major 48.
2249 143 block Mylex DAC960 PCI RAID controller; sixteenth controller
2250 0 = /dev/rd/c15d0 First disk, whole disk
2251 8 = /dev/rd/c15d1 Second disk, whole disk
2253 248 = /dev/rd/c15d31 32nd disk, whole disk
2255 Partitions are handled as for major 48.
2257 144 char Encapsulated PPP
2258 0 = /dev/pppox0 First PPP over Ethernet
2260 63 = /dev/pppox63 64th PPP over Ethernet
2262 This is primarily used for ADSL.
2264 The SST 5136-DN DeviceNet interface driver has been
2265 relocated to major 183 due to an unfortunate conflict.
2267 144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
2268 0 = mounted device 256
2269 255 = mounted device 511
2271 145 char SAM9407-based soundcard
2273 1 = /dev/sam0_sequencer
2274 2 = /dev/sam0_midi00
2277 6 = /dev/sam0_sndstat
2278 18 = /dev/sam0_midi01
2279 34 = /dev/sam0_midi02
2280 50 = /dev/sam0_midi03
2281 64 = /dev/sam1_mixer
2283 128 = /dev/sam2_mixer
2285 192 = /dev/sam3_mixer
2288 Device functions match OSS, but offer a number of
2289 addons, which are sam9407 specific. OSS can be
2290 operated simultaneously, taking care of the codec.
2292 145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
2293 0 = mounted device 512
2294 255 = mounted device 767
2296 146 char SYSTRAM SCRAMNet mirrored-memory network
2297 0 = /dev/scramnet0 First SCRAMNet device
2298 1 = /dev/scramnet1 Second SCRAMNet device
2301 146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
2302 0 = mounted device 768
2303 255 = mounted device 1023
2305 147 char Aureal Semiconductor Vortex Audio device
2306 0 = /dev/aureal0 First Aureal Vortex
2307 1 = /dev/aureal1 Second Aureal Vortex
2310 147 block Distributed Replicated Block Device (DRBD)
2311 0 = /dev/drbd0 First DRBD device
2312 1 = /dev/drbd1 Second DRBD device
2315 148 char Technology Concepts serial card
2316 0 = /dev/ttyT0 First TCL port
2317 1 = /dev/ttyT1 Second TCL port
2320 149 char Technology Concepts serial card - alternate devices
2321 0 = /dev/cut0 Callout device for ttyT0
2322 1 = /dev/cut0 Callout device for ttyT1
2325 150 char Real-Time Linux FIFOs
2326 0 = /dev/rtf0 First RTLinux FIFO
2327 1 = /dev/rtf1 Second RTLinux FIFO
2330 151 char DPT I2O SmartRaid V controller
2331 0 = /dev/dpti0 First DPT I2O adapter
2332 1 = /dev/dpti1 Second DPT I2O adapter
2335 152 char EtherDrive Control Device
2336 0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
2337 1 = /dev/etherd/err Monitor errors
2338 2 = /dev/etherd/raw Raw AoE packet monitor
2340 152 block EtherDrive Block Devices
2341 0 = /dev/etherd/0 EtherDrive 0
2343 255 = /dev/etherd/255 EtherDrive 255
2345 153 char SPI Bus Interface (sometimes referred to as MicroWire)
2346 0 = /dev/spi0 First SPI device on the bus
2347 1 = /dev/spi1 Second SPI device on the bus
2349 15 = /dev/spi15 Sixteenth SPI device on the bus
2351 153 block Enhanced Metadisk RAID (EMD) storage units
2352 0 = /dev/emd/0 First unit
2353 1 = /dev/emd/0p1 Partition 1 on First unit
2354 2 = /dev/emd/0p2 Partition 2 on First unit
2356 15 = /dev/emd/0p15 Partition 15 on First unit
2358 16 = /dev/emd/1 Second unit
2359 32 = /dev/emd/2 Third unit
2361 240 = /dev/emd/15 Sixteenth unit
2363 Partitions are handled in the same way as for IDE
2364 disks (see major number 3) except that the limit on
2367 154 char Specialix RIO serial card
2368 0 = /dev/ttySR0 First RIO port
2370 255 = /dev/ttySR255 256th RIO port
2372 155 char Specialix RIO serial card - alternate devices
2373 0 = /dev/cusr0 Callout device for ttySR0
2375 255 = /dev/cusr255 Callout device for ttySR255
2377 156 char Specialix RIO serial card
2378 0 = /dev/ttySR256 257th RIO port
2380 255 = /dev/ttySR511 512th RIO port
2382 157 char Specialix RIO serial card - alternate devices
2383 0 = /dev/cusr256 Callout device for ttySR256
2385 255 = /dev/cusr511 Callout device for ttySR511
2387 158 char Dialogic GammaLink fax driver
2388 0 = /dev/gfax0 GammaLink channel 0
2389 1 = /dev/gfax1 GammaLink channel 1
2395 160 char General Purpose Instrument Bus (GPIB)
2396 0 = /dev/gpib0 First GPIB bus
2397 1 = /dev/gpib1 Second GPIB bus
2400 160 block Carmel 8-port SATA Disks on First Controller
2401 0 = /dev/carmel/0 SATA disk 0 whole disk
2402 1 = /dev/carmel/0p1 SATA disk 0 partition 1
2404 31 = /dev/carmel/0p31 SATA disk 0 partition 31
2406 32 = /dev/carmel/1 SATA disk 1 whole disk
2407 64 = /dev/carmel/2 SATA disk 2 whole disk
2409 224 = /dev/carmel/7 SATA disk 7 whole disk
2411 Partitions are handled in the same way as for IDE
2412 disks (see major number 3) except that the limit on
2415 161 char IrCOMM devices (IrDA serial/parallel emulation)
2416 0 = /dev/ircomm0 First IrCOMM device
2417 1 = /dev/ircomm1 Second IrCOMM device
2419 16 = /dev/irlpt0 First IrLPT device
2420 17 = /dev/irlpt1 Second IrLPT device
2423 161 block Carmel 8-port SATA Disks on Second Controller
2424 0 = /dev/carmel/8 SATA disk 8 whole disk
2425 1 = /dev/carmel/8p1 SATA disk 8 partition 1
2427 31 = /dev/carmel/8p31 SATA disk 8 partition 31
2429 32 = /dev/carmel/9 SATA disk 9 whole disk
2430 64 = /dev/carmel/10 SATA disk 10 whole disk
2432 224 = /dev/carmel/15 SATA disk 15 whole disk
2434 Partitions are handled in the same way as for IDE
2435 disks (see major number 3) except that the limit on
2438 162 char Raw block device interface
2439 0 = /dev/rawctl Raw I/O control device
2440 1 = /dev/raw/raw1 First raw I/O device
2441 2 = /dev/raw/raw2 Second raw I/O device
2444 163 char UNASSIGNED (was Radio Tech BIM-XXX-RS232 radio modem - see 51)
2446 164 char Chase Research AT/PCI-Fast serial card
2447 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
2449 15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
2450 16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
2452 31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
2453 32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
2455 47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
2456 48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
2458 63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
2460 165 char Chase Research AT/PCI-Fast serial card - alternate devices
2461 0 = /dev/cuch0 Callout device for ttyCH0
2463 63 = /dev/cuch63 Callout device for ttyCH63
2465 166 char ACM USB modems
2466 0 = /dev/ttyACM0 First ACM modem
2467 1 = /dev/ttyACM1 Second ACM modem
2470 167 char ACM USB modems - alternate devices
2471 0 = /dev/cuacm0 Callout device for ttyACM0
2472 1 = /dev/cuacm1 Callout device for ttyACM1
2475 168 char Eracom CSA7000 PCI encryption adaptor
2476 0 = /dev/ecsa0 First CSA7000
2477 1 = /dev/ecsa1 Second CSA7000
2480 169 char Eracom CSA8000 PCI encryption adaptor
2481 0 = /dev/ecsa8-0 First CSA8000
2482 1 = /dev/ecsa8-1 Second CSA8000
2485 170 char AMI MegaRAC remote access controller
2486 0 = /dev/megarac0 First MegaRAC card
2487 1 = /dev/megarac1 Second MegaRAC card
2490 171 char Reserved for IEEE 1394 (Firewire)
2493 172 char Moxa Intellio serial card
2494 0 = /dev/ttyMX0 First Moxa port
2495 1 = /dev/ttyMX1 Second Moxa port
2497 127 = /dev/ttyMX127 128th Moxa port
2498 128 = /dev/moxactl Moxa control port
2500 173 char Moxa Intellio serial card - alternate devices
2501 0 = /dev/cumx0 Callout device for ttyMX0
2502 1 = /dev/cumx1 Callout device for ttyMX1
2504 127 = /dev/cumx127 Callout device for ttyMX127
2506 174 char SmartIO serial card
2507 0 = /dev/ttySI0 First SmartIO port
2508 1 = /dev/ttySI1 Second SmartIO port
2511 175 char SmartIO serial card - alternate devices
2512 0 = /dev/cusi0 Callout device for ttySI0
2513 1 = /dev/cusi1 Callout device for ttySI1
2516 176 char nCipher nFast PCI crypto accelerator
2517 0 = /dev/nfastpci0 First nFast PCI device
2518 1 = /dev/nfastpci1 First nFast PCI device
2521 177 char TI PCILynx memory spaces
2522 0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
2524 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2525 16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
2527 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2528 32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
2530 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2532 178 char Giganet cLAN1xxx virtual interface adapter
2533 0 = /dev/clanvi0 First cLAN adapter
2534 1 = /dev/clanvi1 Second cLAN adapter
2537 179 char CCube DVXChip-based PCI products
2538 0 = /dev/dvxirq0 First DVX device
2539 1 = /dev/dvxirq1 Second DVX device
2542 180 char USB devices
2543 0 = /dev/usb/lp0 First USB printer
2545 15 = /dev/usb/lp15 16th USB printer
2546 16 = /dev/usb/mouse0 First USB mouse
2548 31 = /dev/usb/mouse15 16th USB mouse
2549 32 = /dev/usb/ez0 First USB firmware loader
2551 47 = /dev/usb/ez15 16th USB firmware loader
2552 48 = /dev/usb/scanner0 First USB scanner
2554 63 = /dev/usb/scanner15 16th USB scanner
2555 64 = /dev/usb/rio500 Diamond Rio 500
2556 65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de)
2557 66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD)
2559 180 block USB block devices
2560 0 = /dev/uba First USB block device
2561 8 = /dev/ubb Second USB block device
2562 16 = /dev/ubc Thrid USB block device
2565 181 char Conrad Electronic parallel port radio clocks
2566 0 = /dev/pcfclock0 First Conrad radio clock
2567 1 = /dev/pcfclock1 Second Conrad radio clock
2570 182 char Picture Elements THR2 binarizer
2571 0 = /dev/pethr0 First THR2 board
2572 1 = /dev/pethr1 Second THR2 board
2575 183 char SST 5136-DN DeviceNet interface
2576 0 = /dev/ss5136dn0 First DeviceNet interface
2577 1 = /dev/ss5136dn1 Second DeviceNet interface
2580 This device used to be assigned to major number 144.
2581 It had to be moved due to an unfortunate conflict.
2583 184 char Picture Elements' video simulator/sender
2584 0 = /dev/pevss0 First sender board
2585 1 = /dev/pevss1 Second sender board
2588 185 char InterMezzo high availability file system
2589 0 = /dev/intermezzo0 First cache manager
2590 1 = /dev/intermezzo1 Second cache manager
2593 See http://www.inter-mezzo.org/ for more information.
2595 186 char Object-based storage control device
2596 0 = /dev/obd0 First obd control device
2597 1 = /dev/obd1 Second obd control device
2600 See ftp://ftp.lustre.org/pub/obd for code and information.
2602 187 char DESkey hardware encryption device
2603 0 = /dev/deskey0 First DES key
2604 1 = /dev/deskey1 Second DES key
2607 188 char USB serial converters
2608 0 = /dev/ttyUSB0 First USB serial converter
2609 1 = /dev/ttyUSB1 Second USB serial converter
2612 189 char USB serial converters - alternate devices
2613 0 = /dev/cuusb0 Callout device for ttyUSB0
2614 1 = /dev/cuusb1 Callout device for ttyUSB1
2617 190 char Kansas City tracker/tuner card
2618 0 = /dev/kctt0 First KCT/T card
2619 1 = /dev/kctt1 Second KCT/T card
2622 191 char Reserved for PCMCIA
2624 192 char Kernel profiling interface
2625 0 = /dev/profile Profiling control device
2626 1 = /dev/profile0 Profiling device for CPU 0
2627 2 = /dev/profile1 Profiling device for CPU 1
2630 193 char Kernel event-tracing interface
2631 0 = /dev/trace Tracing control device
2632 1 = /dev/trace0 Tracing device for CPU 0
2633 2 = /dev/trace1 Tracing device for CPU 1
2636 194 char linVideoStreams (LINVS)
2637 0 = /dev/mvideo/status0 Video compression status
2638 1 = /dev/mvideo/stream0 Video stream
2639 2 = /dev/mvideo/frame0 Single compressed frame
2640 3 = /dev/mvideo/rawframe0 Raw uncompressed frame
2641 4 = /dev/mvideo/codec0 Direct codec access
2642 5 = /dev/mvideo/video4linux0 Video4Linux compatibility
2644 16 = /dev/mvideo/status1 Second device
2646 32 = /dev/mvideo/status2 Third device
2649 240 = /dev/mvideo/status15 16th device
2652 195 char Nvidia graphics devices
2653 0 = /dev/nvidia0 First Nvidia card
2654 1 = /dev/nvidia1 Second Nvidia card
2656 255 = /dev/nvidiactl Nvidia card control device
2658 196 char Tormenta T1 card
2659 0 = /dev/tor/0 Master control channel for all cards
2660 1 = /dev/tor/1 First DS0
2661 2 = /dev/tor/2 Second DS0
2663 48 = /dev/tor/48 48th DS0
2664 49 = /dev/tor/49 First pseudo-channel
2665 50 = /dev/tor/50 Second pseudo-channel
2668 197 char OpenTNF tracing facility
2669 0 = /dev/tnf/t0 Trace 0 data extraction
2670 1 = /dev/tnf/t1 Trace 1 data extraction
2672 128 = /dev/tnf/status Tracing facility status
2673 130 = /dev/tnf/trace Tracing device
2675 198 char Total Impact TPMP2 quad coprocessor PCI card
2676 0 = /dev/tpmp2/0 First card
2677 1 = /dev/tpmp2/1 Second card
2680 199 char Veritas volume manager (VxVM) volumes
2681 0 = /dev/vx/rdsk/*/* First volume
2682 1 = /dev/vx/rdsk/*/* Second volume
2685 199 block Veritas volume manager (VxVM) volumes
2686 0 = /dev/vx/dsk/*/* First volume
2687 1 = /dev/vx/dsk/*/* Second volume
2690 The namespace in these directories is maintained by
2691 the user space VxVM software.
2693 200 char Veritas VxVM configuration interface
2694 0 = /dev/vx/config Configuration access node
2695 1 = /dev/vx/trace Volume i/o trace access node
2696 2 = /dev/vx/iod Volume i/o daemon access node
2697 3 = /dev/vx/info Volume information access node
2698 4 = /dev/vx/task Volume tasks access node
2699 5 = /dev/vx/taskmon Volume tasks monitor daemon
2701 201 char Veritas VxVM dynamic multipathing driver
2702 0 = /dev/vx/rdmp/* First multipath device
2703 1 = /dev/vx/rdmp/* Second multipath device
2705 201 block Veritas VxVM dynamic multipathing driver
2706 0 = /dev/vx/dmp/* First multipath device
2707 1 = /dev/vx/dmp/* Second multipath device
2710 The namespace in these directories is maintained by
2711 the user space VxVM software.
2713 202 char CPU model-specific registers
2714 0 = /dev/cpu/0/msr MSRs on CPU 0
2715 1 = /dev/cpu/1/msr MSRs on CPU 1
2718 203 char CPU CPUID information
2719 0 = /dev/cpu/0/cpuid CPUID on CPU 0
2720 1 = /dev/cpu/1/cpuid CPUID on CPU 1
2723 204 char Low-density serial ports
2724 0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
2725 1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
2726 2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
2727 3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
2728 4 = /dev/ttyFB0 Intel Footbridge (ARM)
2729 5 = /dev/ttySA0 StrongARM builtin serial port 0
2730 6 = /dev/ttySA1 StrongARM builtin serial port 1
2731 7 = /dev/ttySA2 StrongARM builtin serial port 2
2732 8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
2733 9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
2734 10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
2735 11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
2736 12 = /dev/ttyFW0 Firmware console - port 0
2737 13 = /dev/ttyFW1 Firmware console - port 1
2738 14 = /dev/ttyFW2 Firmware console - port 2
2739 15 = /dev/ttyFW3 Firmware console - port 3
2740 16 = /dev/ttyAM0 ARM "AMBA" serial port 0
2742 31 = /dev/ttyAM15 ARM "AMBA" serial port 15
2743 32 = /dev/ttyDB0 DataBooster serial port 0
2745 39 = /dev/ttyDB7 DataBooster serial port 7
2746 40 = /dev/ttySG0 SGI Altix console port
2747 41 = /dev/ttySMX0 Motorola i.MX - port 0
2748 42 = /dev/ttySMX1 Motorola i.MX - port 1
2749 43 = /dev/ttySMX2 Motorola i.MX - port 2
2750 44 = /dev/ttyMM0 Marvell MPSC - port 0
2751 45 = /dev/ttyMM1 Marvell MPSC - port 1
2752 46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
2754 47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
2755 50 = /dev/ttyIOC40 Altix serial card
2757 81 = /dev/ttyIOC431 Altix serial card
2758 82 = /dev/ttyVR0 NEC VR4100 series SIU
2759 83 = /dev/ttyVR1 NEC VR4100 series DSIU
2761 205 char Low-density serial ports (alternate device)
2762 0 = /dev/culu0 Callout device for ttyLU0
2763 1 = /dev/culu1 Callout device for ttyLU1
2764 2 = /dev/culu2 Callout device for ttyLU2
2765 3 = /dev/culu3 Callout device for ttyLU3
2766 4 = /dev/cufb0 Callout device for ttyFB0
2767 5 = /dev/cusa0 Callout device for ttySA0
2768 6 = /dev/cusa1 Callout device for ttySA1
2769 7 = /dev/cusa2 Callout device for ttySA2
2770 8 = /dev/cusc0 Callout device for ttySC0
2771 9 = /dev/cusc1 Callout device for ttySC1
2772 10 = /dev/cusc2 Callout device for ttySC2
2773 11 = /dev/cusc3 Callout device for ttySC3
2774 12 = /dev/cufw0 Callout device for ttyFW0
2775 13 = /dev/cufw1 Callout device for ttyFW1
2776 14 = /dev/cufw2 Callout device for ttyFW2
2777 15 = /dev/cufw3 Callout device for ttyFW3
2778 16 = /dev/cuam0 Callout device for ttyAM0
2780 31 = /dev/cuam15 Callout device for ttyAM15
2781 32 = /dev/cudb0 Callout device for ttyDB0
2783 39 = /dev/cudb7 Callout device for ttyDB7
2784 40 = /dev/cusg0 Callout device for ttySG0
2785 41 = /dev/ttycusmx0 Callout device for ttySMX0
2786 42 = /dev/ttycusmx1 Callout device for ttySMX1
2787 43 = /dev/ttycusmx2 Callout device for ttySMX2
2788 46 = /dev/cucpm0 Callout device for ttyCPM0
2790 49 = /dev/cucpm5 Callout device for ttyCPM5
2791 50 = /dev/cuioc40 Callout device for ttyIOC40
2793 81 = /dev/cuioc431 Callout device for ttyIOC431
2794 82 = /dev/cuvr0 Callout device for ttyVR0
2795 83 = /dev/cuvr1 Callout device for ttyVR1
2798 206 char OnStream SC-x0 tape devices
2799 0 = /dev/osst0 First OnStream SCSI tape, mode 0
2800 1 = /dev/osst1 Second OnStream SCSI tape, mode 0
2802 32 = /dev/osst0l First OnStream SCSI tape, mode 1
2803 33 = /dev/osst1l Second OnStream SCSI tape, mode 1
2805 64 = /dev/osst0m First OnStream SCSI tape, mode 2
2806 65 = /dev/osst1m Second OnStream SCSI tape, mode 2
2808 96 = /dev/osst0a First OnStream SCSI tape, mode 3
2809 97 = /dev/osst1a Second OnStream SCSI tape, mode 3
2811 128 = /dev/nosst0 No rewind version of /dev/osst0
2812 129 = /dev/nosst1 No rewind version of /dev/osst1
2814 160 = /dev/nosst0l No rewind version of /dev/osst0l
2815 161 = /dev/nosst1l No rewind version of /dev/osst1l
2817 192 = /dev/nosst0m No rewind version of /dev/osst0m
2818 193 = /dev/nosst1m No rewind version of /dev/osst1m
2820 224 = /dev/nosst0a No rewind version of /dev/osst0a
2821 225 = /dev/nosst1a No rewind version of /dev/osst1a
2824 The OnStream SC-x0 SCSI tapes do not support the
2825 standard SCSI SASD command set and therefore need
2826 their own driver "osst". Note that the IDE, USB (and
2827 maybe ParPort) versions may be driven via ide-scsi or
2828 usb-storage SCSI emulation and this osst device and
2829 driver as well. The ADR-x0 drives are QIC-157
2830 compliant and don't need osst.
2832 207 char Compaq ProLiant health feature indicate
2833 0 = /dev/cpqhealth/cpqw Redirector interface
2834 1 = /dev/cpqhealth/crom EISA CROM
2835 2 = /dev/cpqhealth/cdt Data Table
2836 3 = /dev/cpqhealth/cevt Event Log
2837 4 = /dev/cpqhealth/casr Automatic Server Recovery
2838 5 = /dev/cpqhealth/cecc ECC Memory
2839 6 = /dev/cpqhealth/cmca Machine Check Architecture
2840 7 = /dev/cpqhealth/ccsm Deprecated CDT
2841 8 = /dev/cpqhealth/cnmi NMI Handling
2842 9 = /dev/cpqhealth/css Sideshow Management
2843 10 = /dev/cpqhealth/cram CMOS interface
2844 11 = /dev/cpqhealth/cpci PCI IRQ interface
2846 208 char User space serial ports
2847 0 = /dev/ttyU0 First user space serial port
2848 1 = /dev/ttyU1 Second user space serial port
2851 209 char User space serial ports (alternate devices)
2852 0 = /dev/cuu0 Callout device for ttyU0
2853 1 = /dev/cuu1 Callout device for ttyU1
2856 210 char SBE, Inc. sync/async serial card
2857 0 = /dev/sbei/wxcfg0 Configuration device for board 0
2858 1 = /dev/sbei/dld0 Download device for board 0
2859 2 = /dev/sbei/wan00 WAN device, port 0, board 0
2860 3 = /dev/sbei/wan01 WAN device, port 1, board 0
2861 4 = /dev/sbei/wan02 WAN device, port 2, board 0
2862 5 = /dev/sbei/wan03 WAN device, port 3, board 0
2863 6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
2864 7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
2865 8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
2866 9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
2867 10 = /dev/sbei/wxcfg1 Configuration device for board 1
2868 11 = /dev/sbei/dld1 Download device for board 1
2869 12 = /dev/sbei/wan10 WAN device, port 0, board 1
2870 13 = /dev/sbei/wan11 WAN device, port 1, board 1
2871 14 = /dev/sbei/wan12 WAN device, port 2, board 1
2872 15 = /dev/sbei/wan13 WAN device, port 3, board 1
2873 16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
2874 17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
2875 18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
2876 19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
2879 Yes, each board is really spaced 10 (decimal) apart.
2881 211 char Addinum CPCI1500 digital I/O card
2882 0 = /dev/addinum/cpci1500/0 First CPCI1500 card
2883 1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
2886 212 char LinuxTV.org DVB driver subsystem
2888 0 = /dev/dvb/adapter0/video0 first video decoder of first card
2889 1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
2890 2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
2891 3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2892 4 = /dev/dvb/adapter0/demux0 first demux device of first card
2893 5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
2894 6 = /dev/dvb/adapter0/ca0 first common access port of first card
2895 7 = /dev/dvb/adapter0/net0 first network device of first card
2896 8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
2897 9 = /dev/dvb/adapter0/video1 second video decoder of first card
2899 64 = /dev/dvb/adapter1/video0 first video decoder of second card
2901 128 = /dev/dvb/adapter2/video0 first video decoder of third card
2903 196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
2906 216 char Bluetooth RFCOMM TTY devices
2907 0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device
2908 1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device
2911 217 char Bluetooth RFCOMM TTY devices (alternate devices)
2912 0 = /dev/curf0 Callout device for rfcomm0
2913 1 = /dev/curf1 Callout device for rfcomm1
2916 218 char The Logical Company bus Unibus/Qbus adapters
2917 0 = /dev/logicalco/bci/0 First bus adapter
2918 1 = /dev/logicalco/bci/1 First bus adapter
2921 219 char The Logical Company DCI-1300 digital I/O card
2922 0 = /dev/logicalco/dci1300/0 First DCI-1300 card
2923 1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
2926 220 char Myricom Myrinet "GM" board
2927 0 = /dev/myricom/gm0 First Myrinet GM board
2928 1 = /dev/myricom/gmp0 First board "root access"
2929 2 = /dev/myricom/gm1 Second Myrinet GM board
2930 3 = /dev/myricom/gmp1 Second board "root access"
2934 0 = /dev/bus/vme/m0 First master image
2935 1 = /dev/bus/vme/m1 Second master image
2936 2 = /dev/bus/vme/m2 Third master image
2937 3 = /dev/bus/vme/m3 Fourth master image
2938 4 = /dev/bus/vme/s0 First slave image
2939 5 = /dev/bus/vme/s1 Second slave image
2940 6 = /dev/bus/vme/s2 Third slave image
2941 7 = /dev/bus/vme/s3 Fourth slave image
2942 8 = /dev/bus/vme/ctl Control
2944 It is expected that all VME bus drivers will use the
2945 same interface. For interface documentation see
2946 http://www.vmelinux.org/.
2948 224 char A2232 serial card
2949 0 = /dev/ttyY0 First A2232 port
2950 1 = /dev/ttyY1 Second A2232 port
2953 225 char A2232 serial card (alternate devices)
2954 0 = /dev/cuy0 Callout device for ttyY0
2955 1 = /dev/cuy1 Callout device for ttyY1
2958 226 char Direct Rendering Infrastructure (DRI)
2959 0 = /dev/dri/card0 First graphics card
2960 1 = /dev/dri/card1 Second graphics card
2963 227 char IBM 3270 terminal Unix tty access
2964 1 = /dev/3270/tty1 First 3270 terminal
2965 2 = /dev/3270/tty2 Seconds 3270 terminal
2968 228 char IBM 3270 terminal block-mode access
2969 0 = /dev/3270/tub Controlling interface
2970 1 = /dev/3270/tub1 First 3270 terminal
2971 2 = /dev/3270/tub2 Second 3270 terminal
2974 229 char IBM iSeries virtual console
2975 0 = /dev/iseries/vtty0 First console port
2976 1 = /dev/iseries/vtty1 Second console port
2979 230 char IBM iSeries virtual tape
2980 0 = /dev/iseries/vt0 First virtual tape, mode 0
2981 1 = /dev/iseries/vt1 Second virtual tape, mode 0
2983 32 = /dev/iseries/vt0l First virtual tape, mode 1
2984 33 = /dev/iseries/vt1l Second virtual tape, mode 1
2986 64 = /dev/iseries/vt0m First virtual tape, mode 2
2987 65 = /dev/iseries/vt1m Second virtual tape, mode 2
2989 96 = /dev/iseries/vt0a First virtual tape, mode 3
2990 97 = /dev/iseries/vt1a Second virtual tape, mode 3
2992 128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
2993 129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
2995 160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
2996 161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
2998 192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
2999 193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
3001 224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
3002 225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
3005 "No rewind" refers to the omission of the default
3006 automatic rewind on device close. The MTREW or MTOFFL
3007 ioctl()'s can be used to rewind the tape regardless of
3008 the device used to access it.
3010 231 char InfiniBand MAD
3011 0 = /dev/infiniband/umad0
3012 1 = /dev/infiniband/umad1
3017 240-254 char LOCAL/EXPERIMENTAL USE
3018 240-254 block LOCAL/EXPERIMENTAL USE
3019 Allocated for local/experimental use. For devices not
3020 assigned official numbers, these ranges should be
3021 used in order to avoid conflicting with future assignments.
3026 This major is reserved to assist the expansion to a
3027 larger number space. No device nodes with this major
3028 should ever be created on the filesystem.
3030 **** ADDITIONAL /dev DIRECTORY ENTRIES
3032 This section details additional entries that should or may exist in
3033 the /dev directory. It is preferred that symbolic links use the same
3034 form (absolute or relative) as is indicated here. Links are
3035 classified as "hard" or "symbolic" depending on the preferred type of
3036 link; if possible, the indicated type of link should be used.
3041 These links should exist on all systems:
3043 /dev/fd /proc/self/fd symbolic File descriptors
3044 /dev/stdin fd/0 symbolic stdin file descriptor
3045 /dev/stdout fd/1 symbolic stdout file descriptor
3046 /dev/stderr fd/2 symbolic stderr file descriptor
3047 /dev/nfsd socksys symbolic Required by iBCS-2
3048 /dev/X0R null symbolic Required by iBCS-2
3050 Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3054 It is recommended that these links exist on all systems:
3056 /dev/core /proc/kcore symbolic Backward compatibility
3057 /dev/ramdisk ram0 symbolic Backward compatibility
3058 /dev/ftape qft0 symbolic Backward compatibility
3059 /dev/bttv0 video0 symbolic Backward compatibility
3060 /dev/radio radio0 symbolic Backward compatibility
3061 /dev/i2o* /dev/i2o/* symbolic Backward compatibility
3062 /dev/scd? sr? hard Alternate SCSI CD-ROM name
3064 Locally defined links
3066 The following links may be established locally to conform to the
3067 configuration of the system. This is merely a tabulation of existing
3068 practice, and does not constitute a recommendation. However, if they
3069 exist, they should have the following uses.
3071 /dev/mouse mouse port symbolic Current mouse device
3072 /dev/tape tape device symbolic Current tape device
3073 /dev/cdrom CD-ROM device symbolic Current CD-ROM device
3074 /dev/cdwriter CD-writer symbolic Current CD-writer device
3075 /dev/scanner scanner symbolic Current scanner device
3076 /dev/modem modem port symbolic Current dialout device
3077 /dev/root root device symbolic Current root filesystem
3078 /dev/swap swap device symbolic Current swap device
3080 /dev/modem should not be used for a modem which supports dialin as
3081 well as dialout, as it tends to cause lock file problems. If it
3082 exists, /dev/modem should point to the appropriate primary TTY device
3083 (the use of the alternate callout devices is deprecated).
3085 For SCSI devices, /dev/tape and /dev/cdrom should point to the
3086 ``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3087 /dev/cdwriter and /dev/scanner should point to the appropriate generic
3088 SCSI devices (/dev/sg*).
3090 /dev/mouse may point to a primary serial TTY device, a hardware mouse
3091 device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3095 Non-transient sockets and named pipes may exist in /dev. Common entries are:
3097 /dev/printer socket lpd local socket
3098 /dev/log socket syslog local socket
3099 /dev/gpmdata socket gpm mouse multiplexer
3103 The following names are reserved for mounting special filesystems
3104 under /dev. These special filesystems provide kernel interfaces that
3105 cannot be provided with standard device nodes.
3107 /dev/pts devpts PTY slave filesystem
3108 /dev/shm tmpfs POSIX shared memory maintenance access
3110 **** TERMINAL DEVICES
3112 Terminal, or TTY devices are a special class of character devices. A
3113 terminal device is any device that could act as a controlling terminal
3114 for a session; this includes virtual consoles, serial ports, and
3115 pseudoterminals (PTYs).
3117 All terminal devices share a common set of capabilities known as line
3118 diciplines; these include the common terminal line dicipline as well
3119 as SLIP and PPP modes.
3121 All terminal devices are named similarly; this section explains the
3122 naming and use of the various types of TTYs. Note that the naming
3123 conventions include several historical warts; some of these are
3124 Linux-specific, some were inherited from other systems, and some
3125 reflect Linux outgrowing a borrowed convention.
3127 A hash mark (#) in a device name is used here to indicate a decimal
3128 number without leading zeroes.
3130 Virtual consoles and the console device
3132 Virtual consoles are full-screen terminal displays on the system video
3133 monitor. Virtual consoles are named /dev/tty#, with numbering
3134 starting at /dev/tty1; /dev/tty0 is the current virtual console.
3135 /dev/tty0 is the device that should be used to access the system video
3136 card on those architectures for which the frame buffer devices
3137 (/dev/fb*) are not applicable. Do not use /dev/console
3140 The console device, /dev/console, is the device to which system
3141 messages should be sent, and on which logins should be permitted in
3142 single-user mode. Starting with Linux 2.1.71, /dev/console is managed
3143 by the kernel; for previous versions it should be a symbolic link to
3144 either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3145 a serial port primary (tty*, not cu*) device, depending on the
3146 configuration of the system.
3150 Serial ports are RS-232 serial ports and any device which simulates
3151 one, either in hardware (such as internal modems) or in software (such
3152 as the ISDN driver.) Under Linux, each serial ports has two device
3153 names, the primary or callin device and the alternate or callout one.
3154 Each kind of device is indicated by a different letter. For any
3155 letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3156 respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3157 correspond to /dev/cua# and /dev/cub#. In the future, it should be
3158 expected that multiple letters will be used; all letters will be upper
3159 case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3160 "cu" device (e.g. /dev/cudp#).
3162 The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3164 The alternate devices provide for kernel-based exclusion and somewhat
3165 different defaults than the primary devices. Their main purpose is to
3166 allow the use of serial ports with programs with no inherent or broken
3167 support for serial ports. Their use is deprecated, and they may be
3168 removed from a future version of Linux.
3170 Arbitration of serial ports is provided by the use of lock files with
3171 the names /var/lock/LCK..ttyX#. The contents of the lock file should
3172 be the PID of the locking process as an ASCII number.
3174 It is common practice to install links such as /dev/modem
3175 which point to serial ports. In order to ensure proper locking in the
3176 presence of these links, it is recommended that software chase
3177 symlinks and lock all possible names; additionally, it is recommended
3178 that a lock file be installed with the corresponding alternate
3179 device. In order to avoid deadlocks, it is recommended that the locks
3180 are acquired in the following order, and released in the reverse:
3182 1. The symbolic link name, if any (/var/lock/LCK..modem)
3183 2. The "tty" name (/var/lock/LCK..ttyS2)
3184 3. The alternate device name (/var/lock/LCK..cua2)
3186 In the case of nested symbolic links, the lock files should be
3187 installed in the order the symlinks are resolved.
3189 Under no circumstances should an application hold a lock while waiting
3190 for another to be released. In addition, applications which attempt
3191 to create lock files for the corresponding alternate device names
3192 should take into account the possibility of being used on a non-serial
3193 port TTY, for which no alternate device would exist.
3195 Pseudoterminals (PTYs)
3197 Pseudoterminals, or PTYs, are used to create login sessions or provide
3198 other capabilities requiring a TTY line dicipline (including SLIP or
3199 PPP capability) to arbitrary data-generation processes. Each PTY has
3200 a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3201 /dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
3202 allowing each master side to be opened only once.
3204 Once the master side has been opened, the corresponding slave device
3205 can be used in the same manner as any TTY device. The master and
3206 slave devices are connected by the kernel, generating the equivalent
3207 of a bidirectional pipe with TTY capabilities.
3209 Recent versions of the Linux kernels and GNU libc contain support for
3210 the System V/Unix98 naming scheme for PTYs, which assigns a common
3211 device, /dev/ptmx, to all the masters (opening it will automatically
3212 give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3213 for the slaves; the slaves are named with decimal integers (/dev/pts/#
3214 in our notation). This removes the problem of exhausting the
3215 namespace and enables the kernel to automatically create the device
3216 nodes for the slaves on demand using the "devpts" filesystem.
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